Math alternate interim

17 = x + 3

• x = 20
• x = 14
• x = 13
• x = 19

x + 12 = 20

• x = 32
• x = -32
• x = 8
• x = -8

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.

10x = 90

• x = 80
• x = 100
• x = 10
• x = 9

Which equation has x = 5 as the solution?

• x + 15 = 10
• 2x = 5
• 2x = 10

8 = x - 1

• x = 8
• x = 1
• x = 7
• x = 9

x ÷ 2 = 12

• x = 24
• x = 6
• x = 20
• x = 10

x − 7 = 13

• 43
• 20
• 12
• 10

Betsy gave Shawn 8 red pens. Now he has 11 red pens. How many red pens did Shawn have before?
p + 8 = 11

• 17
• 3
• 88
• 4

x + 12 = 20

• x = 32
• x = -32
• x = 8
• x = -8