Solving One Variable Addition and Subtraction

x + 12 = 20

• x = 32

• x = -32

• x = 8

• x = -8

y + 8 = 20

• 10

• 11

• 12

• 13

k - 10 = 7

• -3

• 3

• 17

• - 17

17 = x + 3

• x = 20

• x = 14

• x = 13

• x = 19

Solve the equation.

x + 9 = -5

Mathematical Equivalence

OFF

x + (-18) = 34

Mathematical Equivalence

ON

x - 7 = -15

Mathematical Equivalence

ON

4 + b = 30

• -34

• 34

• -26

• 26

x - 62 = 123
How should you show your work to isolate the variable and solve the equation?

• Add 62 to each side. 

• Subtract 62 from each side.

• Multiply each side by 62.

• Add 123 to each side.

y - 4.6 = 12

• 16.6

• 5.8

• 7.4

• Answer not Given