Solve: 1) m + 2 = 10 2) x - 4 = 6 3) x + 7 = 3 4) m - 4 = 9 5) 11 = x - - 2 6) 8 + y = -6 -2 m = 8 +4+4 x = 10 -7 x = -4 +4+4 m = 13 -2 9 = x -8 y = -14.

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Presentation transcript:

Solve: 1) m + 2 = 10 2) x - 4 = 6 3) x + 7 = 3 4) m - 4 = 9 5) 11 = x ) 8 + y = m = x = x = m = = x -8 y = Warm-ups

Agenda: 9/2/15 CA Standards: AF 1.1: Write and solve linear equations in one variable. Objectives: (1)Students will use inverse operations to solve two-step equations. 1.) Warm-ups 2.) Questions WS Solving Equation and Word Problems 3.) Lesson Solving Multi-Step Equations #1 ppt. 4.) Class/Homework WS Solving Two-Step Equations WS Solving Two-Step Equation Word Problems 5.) Work Independently STAY ON TASK!!!

What is the opposite of multiplication? What is the opposite of addition? What is the opposite of subtraction? What is the opposite of division? ??Questions?? Division Subtraction Addition Multiplication

Multiple Step Equations #1 3 Types : Type 1 : -3x + 10 = 1 Pencils Down Type 2: -3x x = -2 Type 3: 8x + x + 3 =

Type 1 : -3x + 10 = 1 You need to get x xx x all by itself! Adding Subtracting  Get rid of the Adding or Subtracting! - 10 = -3x MultiplicationDivision  Now get rid of the Multiplication or Division! x = 3 Opposite Do the Opposite!

You try : -2x – 12 = 2 Adding Subtracting  Get rid of the Adding or Subtracting! +12 = -2x MultiplicationDivision  Now get rid of the Multiplication or Division! x = -7 Opposite Do the Opposite!

Type 2 : -3x x = -2  Collect Like Terms. Use a Chart! x # x 10 2x + 10 = -2 Subtracting  Get rid of the Adding or Subtracting! Do the Opposite! x + 0 = -12 MultiplicationDivision  Now get rid of the Multiplication or Division! Do the Opposite! 2 2 x = -6

On your own : -2x x = 13  Collect Like Terms. Use a Chart! x # x 9 9 4x + 9 = 13 Adding Subtracting  Get rid of the Adding or Subtracting! Do the Opposite! - 9 4x + 0 = 4 MultiplicationDivision  Now get rid of the Multiplication or Division! Do the Opposite! 4 4 x = 1

Type 3 : 8x + x + 3 =  Collect Like Terms. Use a Chart! x # 8 1 9x 3 3 9x + 3 = 12 Subtracting  Get rid of the Adding or Subtracting! Do the Opposite! - 3 9x + 0 = 9 MultiplicationDivision  Now get rid of the Multiplication or Division! Do the Opposite! 9 9 x = 1  Do One Side FIRST! 9x + 3  Now do the other side! =