Warm-Up What is the opposite of adding?

Slides:



Advertisements
Similar presentations
3-3 Solving Multiplication Equations. Solve Solution GOAL Find the value of the variable that makes the equation TRUE. The value that makes the equation.
Advertisements

3.5 – Solving Systems of Equations in Three Variables.
Solve: Y + 12 = 312 Y = 300. Solve 3z = 612 Z = 206.
Solving Equations. The purpose of this tutorial is to help you solve equations. As you move through the tutorial the examples will become more complex.
Jeopardy Solving Equations Add and Subtract Multiply and Divide Multi-Step Variables on each side Grouping Symbols $100 $200 $300 $400 $500 $100 $200.
One step equations Add Subtract Multiply Divide  When we solve an equation, our goal is to isolate our variable by using our inverse operations.  What.
Solving Equations Inverse operations. INVERSE = Opposite If I am solving an equation using inverses operations, I am solving it using opposite signs.
Solving Addition and Subtraction Equations Lesson 2.3 and 2.4.
Solving a System of Equations by Elimination SYSTEMS1.2- I can solve a system of equation by elimination.
Solving Inequalities Using Addition & Subtraction.
* Collect the like terms 1. 2a = 2a x -2x + 9 = 6x z – – 5z = 2z - 6.
0.1 Solving One-Step Equations. To solve an equation means to find all values of the variable that make the equation true. Isolate the variable to one.
Jeopardy Solving Equations
Lesson 13 ONE STEP EQUATIONS A.4e.
My Equations Booklet.
Solving 2 step equations
The Square Root Principle & Completing the Square
Solving Two step equations
Solving Addition and Subtraction Equations
Solve Systems of Equations by Elimination
Solving Multi-Step Equations
Multiply or divide as usual.
Cross Multiplication. 4x + 16 = ……………...
Objective 3.6 solve multi-step inequalities.
SOLVING EQUATIONS, INEQUALITIES, AND ALGEBRAIC PROPORTIONS
Clear your desk except for paper/pencil Copy the DATE and TOPIC
Algebraic Inequalities
Variables on Both Sides with Equations
Solving Systems by Elimination
Warm-Up 13 x 3 14 x 4 12 x 11 9 x 13.
Warm up 11/1/ X ÷ 40.
Using Addition & Subtraction
Math Objective: Solve Two-Step Equations
Solving 1-Step Integer Equations
Example 2 4 m 8 m 5m 12 m x y.
Solving One Step Equations
Writing Expressions and Equations
Using Addition & Subtraction
Solving Systems of Equations by Elimination Day 2
Operations with Integers
One Step Rational Number Equations
Solving Two-Step Equations Lesson 2-2 Learning goal.
Quadratic Equations and Functions
Solving Formulas.
Learn to solve equations with integers.
Problem Solving with Two-Step Equations
Equations with Fractions
Multiplying Integers SAME SIGNS??? Answer will be POSITIVE. ex)
Equations with Fractions
Using Addition & Subtraction
Solving Equations with Variables on Both Sides 4:3
Solving Multiplication Equations
Solving 1-Step Integer Equations
Solve Absolute Value Equations
Solving Multi-Step Equations
Solving for a Variable In a Formula
Solving Division Equations
Solving Multi-Step Equations
Operations with Integers
Review of Integers and Solving Equations
Learn to solve equations with integers.
Add Subtract Multiply Divide
2.1 Solving Two-Step Equations
Solving Equations with Variables on Both Sides
DO NOW Copy down your homework: 2-2 Lesson check on page 91
Using Addition & Subtraction
Solving basic equations
Solving Equations by 2-1 Adding or Subtracting Warm Up
Add Subtract Multiply Divide
Using Addition & Subtraction
Presentation transcript:

Warm-Up What is the opposite of adding? What is the opposite of dividing? What is the sign of the answer when you multiply a positive and a negative? What is the sign of the answer when you divide a negative and a negative? What is the sign of the answer when you add a negative and a negative?

A.7 Section – 3.1 Solving One Step Equations Steps for Solving One & Two Step Equations 1) Line through Equal Sign 2) Isolate the variable (AKA get all the stuff away from the letter using opposite operations) Jump the equal sign means opposite operation Opposite Side = Opposite Action

Ex. 1 Ex. 2 x + 4 = 12 4 + x = –12 Ex. 3 Ex. 4 x – 4 = 12 x – 4 = –12

Ex. 5 Ex. 6 –6 + x = 17 –17 = x + (–6) x – (– 6) = 17 –17 = x – (–6)

(A.7) Section 3.1 Ex. 1 Ex. 2 15b = 75 75 = –15b Ex. 3 Ex. 4

Ex. 5 Ex. 6 Ex. 7 Ex. 8 –a = 3 –a = –3

Word Problem Practice Set up an equation and solve. 1. A number x increased by four is negative twelve. 2. Negative four times a number q is fifty-six. 3. One eighth of a number is 10. Write and solve an equation to find the number.

Word Problem Practice Set up an equation and solve. 1. Roses cost $1.50 each. If you have $15.00, how many roses can you buy? 2. A taxi can go 50 miles farther on a gallon of gas than a bus. If a taxi goes 120 miles, how many miles did the bus go?

A.7 - Quiz Answers x = -3 2. a = -35 3. y = 225

A.8 - Solving Two Step Equations Examples

Solving Two Step Equations Examples

Solving Two Step Equations Examples

Solving Equations Word Problems 1. Three quarters of a number increased by ten is negative four. Find the number.

Solving Equations Word Problems 2. A music store sells a used guitar for $120. This is $25 more than half the cost of a new guitar of the same brand. What is the cost of a new guitar?

Solving Equations Word Problems 3. Suppose you are helping to prepare a large meal. You can peel 2 carrots per minute. You need 60 carrots. How long will it take you to finish if you have already peeled 18 carrots?