Linear equations and Inverse operations

Inverse Operations

100

What is the inverse of addition?

Subtraction

200

What is the inverse of multiplication?

Division

300

What is the inverse of +5?

-5 (subtract 5)

400

What is the inverse of multiplying by 13?

Dividing by 13

500

What is the inverse of this operation: 7y?

Dividing by 7

1-Step

100

Solve: x - 3 = 5

x = 8

200

Solve: x/9 = 4

x = 36

300

Solve 4b = 12

b = 3

400

Solve: 5 + j = 11

j = 6

500

Solve: -6 - p = 10

p = -16

2-Step

100

Solve: 2x+3=11 

x = 4

200

Solve: 4q−7=13 

q = 5

300

Solve: 5t+7=32 

t = 5

400

Solve: −3r+8=−10 

r = 6

500

Solve: 7w−8=16

w = 24/7 or 3 3/7

3-Step

300

Solve: (2x+11)/3 = 0

11/12

400

Solve: 5x+4=2x+19

x = 5

500

−2o+7=l−8

o = 5

Brackets

100

Expand these brackets: 3(d + 3)

3d + 9

200

Solve 3(x-2)-x = 12

x = 9

300

2(3x+2) -x = -6

x = -2

400

Solve: 5(2 - 3x) = -8 - 6x

x = 2

500

3(x - 6) + 8x = 5(3x - 1)

x = 13