Solve One Step Equations with Positive Integers

What is the correct step to solve for the variable?
15 = m - 5

• add 5 to both sides

• add 15 to both sides

• subtract 15 from both sides

• subtract 5 from both sides

Solve for x.

x + 12 = 20

• x = 8

• x = -32

• x = 32

• x = -8

Solve for x.

x - 8 = -5

• x = 13

• x = -13

• x = 3

• x = -3

w - 4 = 18

• 22

• 14

• -14

• -22

• 16

• -16

• 10

• -10

a-12=-8
a=?

• 4

• -20

• -96

• -⅔

18=n-2
n=?

• 20

• 9

• 36

• 16

85=17n
n=?

• 5

• 68

• 1445

• 102

• 5

• -5

• 1

• -1

What is the step needed to be taken to solve this equation?
\frac{x}{5}=-2

• divide by 5 on the left side of equal sign

• divide by 5 on both sides of equal sign

• multiply by 5 on right side of equal sign

• multiply by 5 on both sides of equal sign