1. Warm – Up
Using the “Combining Like Terms ½ sheet”, simplify questions 1-10 EVENS ONLY.
2. 18x
4. 18xy
6. 1.4r + 3
8. 18x + 4y
10. 25w + 3j + 31

2. Balance
x – 2 = 5
x – 2 5

3. Balance
x – 2 = 5 5
x – 2
+ 2

4. Balance
x – 2 = 5
x – 2
+ 2 5
+ 2

5. Balance
x – 2 = 5 x 7
x = 7

6. Solving equations in one step
Goal:
Original problem has:
Undo it with:
Example:

7. Solving equations in one step
Goal:
get the variable (letter) by itself.
Original problem has:
addition
subtraction
multiplication
division
Undo it with:
subtraction
addition
division
multiplication
Example:
214 = y + 112
x – 31 = 14
5x = 20 2•
x = 20 2 •2
-112
-112
+31
+31 5 5
102 = y
x = 45
x = 4
x = 40

8. You Try… Solve. 1. 21 = g + 14 2. w – 27 = 67 3. 88 = t + 34
4. I have driven 125 miles of my 320 mile trip to Jacksonville, FL. How many miles do I have to go? ***write a one-step equation to solve.***
G = 7
W = 94
T = 54
X = 320 , so x = 195 miles