1. Bellwork
Solve.

2. Writing and Solving Linear Equations
These are the topics that will be on your test:
Section 1 - Writing Equations by Looking at Tables
Section 2 - Write and Solve One-Step Linear Equations
Section 3 - Write and Solve Multi-Step Linear Equations
Section 4 - Write and Solve Linear Equations with x on Both Sides
Section 5 - Write and Solve Linear Equations with Two Different Variables
Estimated Date of Test: October 12th

3. 4. Undo addition or subtraction
5 steps to follow when
Solving Equations
(isolating x) 1. 2. 3.
4. Undo addition or subtraction
5. Undo multiplication or division

4. 4. Undo addition or subtraction
5 steps to follow when
Solving Equations
(isolating x)
4. Undo addition or subtraction
On the side of the = with x, look for the number that is by itself
Undo (+) numbers with subtraction (–)
Undo (–) numbers with addition (+)

5. 5. Undo multiplication or division
5 steps to follow when
Solving Equations
(isolating x)
5. Undo multiplication or division
On the side of the = with x, look for the number that is attached to x
Undo multiplication with division
Undo division with multiplication
**If the number you’re getting rid of is negative, the number you’re •/÷ is also negative!!**

6. Undo addition and subtraction first, Undo multiplication and division
Ex #1
TWO-STEP EQUATIONS
3x + 7 = -8
Undo addition and subtraction first,
- 7
- 7 3x
-15
THEN 3 3
Undo multiplication and division x -5
x = -5
GOAL: to get x by itself

7. Undo addition and subtraction first, Undo multiplication and division
Ex #2
Undo addition and subtraction first, +4 +4
THEN
6 • -3
• 6
Undo multiplication and division
-18 x
x = -18
GOAL: to get x by itself

8. YOU TRY

9. Undo addition and subtraction first, Undo multiplication and division
Ex #3
TWO-STEP EQUATIONS
Undo addition and subtraction first,
-1/2
-1/2
THEN
Undo multiplication and division
3/4
3/4 u
GOAL: to get x by itself

10. Undo addition and subtraction first, Undo multiplication and division
Ex #4
Undo addition and subtraction first,
+1/3
+1/3
THEN
• 5
5 •
Undo multiplication and division n 15
n = 15
GOAL: to get x by itself

11. YOU TRY