One Step Equations and Models

5 less than a number is 15.

• x - 5 = 15

• 5 - x = 15

• 15 - x = 5

Which equation has w = 8 as the solution?

• 8w= 64

• 16w = 240

• 16 - w = 9

• 4 + w = 10

-16+ x= -15

• 2

• 0

• -1

• 1

To solve the equation:

4p = 16

what needs to be done to both sides to isolate the variable?

• Add 4

• Subtract 4

• Multiply by 4

• Divide by 4

Solve the equation:
-5x = 25

• x = 20

• x = -20

• x = -5

• x = 5

Solve the following equation
1 + a = 15

• 14

• 16

• 12

• - 16

18 + a = -50

• a = -950

• a = -68

• a = -32

• a = -50/19

What would be the best first step to solving the equation?

• multiply both sides by 3

• multiply both sides by 4

• divide both sides by 3

• divide both sides by 4

What is the first step to solve for b: 2b = -16

• add 2 to both sides

• subtract 2 to both sides

• multiply 2 to both sides

• divide 2 to both sides

x = 20

x = 7

x = 10

x = 3

• x = 20

• x = 7

• x = 10

• x = 3