One Step Equations Add and Subtract Only

Solve the equation: y + 13 = 24

• y = 12

• y = 10

• y = 11

• y = 14

Solve the equation: r - 12 = 30

• r = 42

• r = 33

• r = 44

• r = 45

Solve the equation: s - 33 = 89

• s = 134

• s = 145

• s = 122

• s = 213

Pairs of operations that undo each other

• inverse operations

• solution

• inequality

Solve the equation.

x + 9 = -5

Mathematical Equivalence

OFF

What step should you do first to solve this equation?

y + 3 = 19

• Add 19 on both side of the equation

• Subtract 3 on both sides of the equation.

• Add 3 on both sides of the equation.

• Subtract 3 on only the left side of the equation.

What step should you do first to solve this equation?

• Add 23 on both sides of the equation.

• Subtract 9 on both sides of the equation.

• Add 9 on both sides of the equation.

• Subtract b on both sides of the equation.

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.

19  + a  =  -50

• a = -950

• a =  -69

• a = -31

• a = -50/19

x - 8 = -5 

• 13

• -13

• 3

• -3