Solving Equations

Combining Like Terms, Expressions & Equations

100

9x + 10y - 15x + 12y

-6x + 22y

200

Write a variable expression to represent 8 more than twice a number.

2x + 8 or 8 + 2x

300

Write an expression to represent 8 less than a number.

n - 8

400

Write an equation to represent the following: The total cost (C) of some shirts (T), if the shirts cost $15 dollars

C = 15T

500

Write an equation to represent the following. What is the total change (C) you will receive when you pay for 4 bananas (B) with $20?

C = 20 - 4B

One-step Equations

100

Solve: 

x + 10 = 15

x = 5

200

Solve: 

y - 15 = 12

y = 27

300

Solve: 

3x = 15

x = 5

400

Solve: 

x/4 = -12

x=-48

500

Solve: 

-4y = -240

y = 60

Two-Step Equations

100

Solve: 

2x + 10 = 12

x = 1

200

Solve: 

22 = -y + 15

y = -7

300

Solve: 

1 = x/3 - 15

x = 48

400

Solve: -x + 7 = 15

What is x = -8?

500

Solve: 

12=-y/4-8

What is y = -80?

Multi-Step Equations

100

Solve: 

2(3n + 7) = -22

n = -6

200

Solve: 

5(h + 11) = 20

h = -7

300

Solve: 

2(a - 4) = 13

a= 21/2

400

Solve: 

-4x + 3(2x - 5) = 31

x = 23

500

Solve: 

2/3(9b - 27) = 36

What is b = 9?