One-Step Equations and Combining Like Terms

Vocabulary

100

Give three examples of a variable.

(Any 3 letters)

200

What is the opposite of division?

Multiplication 

300

What is a number all by itself WITHOUT a variable in an expression? For example, the 7 in 3x +7 = 90

Constant 

400

What does combine mean? 

To add; or, to put together 

500

What is a coefficient?

A number with a variable that tells us how many of the variable we have. For example, the 8 in 8x is a coefficient. 

Addition

100

Solve. 

x + 2 = -8

x = -10

200

Solve. 

x + 4 = -14

x = -18

300

Solve. 

26 = x + 14

x = 12

400

Solve.

- 6 + x = 12 

x = 18

500

Solve.

-10.1 = w + 5.3

 w = -15.4

Subtraction

100

Solve. 

a - 6 = 13

a = 19

200

Solve.

x - 5 = -1

x = 4

300

Solve.

-3 = z - 8

z = 5

400

Solve.

c - 7.6 = -4

c = 3.6

500

Solve.

-9.3 = d - 3.4

d = -5.9

Combining Like Terms

100

Combine 6x and 2x

8x

200

Combine like terms:

-5x + 4x + 3x - 10

2x - 10 

300

Combine like terms:

6x + 9y - 10

6x + 9y -10 

400

Combine:

7x - 10x + 4x - 8x + 7x 

0

500

(-2g + 7) - (g + 11)

-3g - 4