Solving One-Step Addition Equations

Find the variable.
13 + q = 56

• 43

• 40

• q

• 42

x + 24 = 44

• x = -20

• x = 68

• x = 20

• x = -68

1467 + x = 1653

• x = 3120

• x = 186

• x = 286

• x = 3020

17 = x + 3

• x = 20

• x = 14

• x = 13

• x = 19

y + 2.93 = 36

• y = 38.93

• y = 34.93

• y = 6.7

• y = 33.07

To solve the equation
x + 5 = 8
 I would ....

• subtract 5 from x

• subtract 5 from both sides

• subtract 5 from one side and add 5 to the other

• add 5 to both sides

Solve a + 56 = 89

• 145

• 33

• -26

• 13

When you solve one-step equations, you can do anything you want to one side of the equal sign, as long as...

• it is mathematical

• you do the SAME thing to the other side

• solving equations is impossible

• I love Snow Days!

Look at the equation below.
What should we subtract from both sides to get the variable by itself?
x + 9 = 21

• 9

• 21

To solve the equation below, you'd
x + 62 = 123

• add 62 to each side

• subtract 62 from each side

• multiply each side by 62

• subtract 123 from each side