Solving Equations

Inverse Operations

100

This is the inverse operation of subtraction.

Addition

200

This is the inverse operation of division.

Multiplication

300

This is the inverse operation of multiplication.

Division

400

This is the inverse operation of addition.

Subtraction

500

This is the inverse of -8.

8

Solving One-Step Equations (+ & -)

100

x - 34 = 10

x = 44

200

a + 13 = 24

a = 11

300

3.5 + b = 6.1

b = 2.6

400

c + 56 = -200

c = -256

500

-2 + x = -8

x = -6

Solving One-Step Equations (x & /)

100

7.8h = 15.6

h = 2

200

4x = 345

x = 86.25

300

r/6 = 390

r = 2340

400

j/-5.6 = 3

j = -16.8

500

-15h = 144

h = -9.6

Solving Two-Step Equations

100

5j + 14 = -1

j = -3

200

3(2y - 8) = 240

y = 44

300

r/7 - 8 = -43

r = -245

400

6 = −0.5x − 5

x = -22

500

-11 = x/8 - 13

x = 16

Solving Equations With Variables on Both Sides

100

6r + 7 = 13 + 7r

r = -1

200

13 − 4x = 1 − x

x = 4

300

−7x − 3x + 2 = −8x − 8

x = 5

400

n − 3n = 14 − 4n

n = 7

500

−6n − 20 = −2n + 4(1 − 3n)

n = 3