Solving Simple Variable Equations

x + 12 = 20

• x = 32
• x = -32
• x = 8
• x = -8

5.    6b = 30

• x = 36
• x = 24
• x = 180
• x = 5

Solve the equation
3x = 27. 

• x = 24
• x = 81
• x = 9
• x = 3

Which equation has x = 5 as the solution?

• x + 15 = 10
• 2x = 5
• 2x = 10

18+m=8

• m = 0
• m = -10
• m = 10
• m = 8

What equation matches this situation?
Robyn had some video games then bought 4 more.  Now she has a total of 10 games.

• v - 4 = 10
• v + 4 = 10
• 10 - 4 = v
• Answer not Given

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.

2n=100

• N = 10
• N = 50
• N = 20
• N = -50

144=12z

• z = 20
• z = 11
• z = 12
• z = -12

7.    -4y = 48

• x = -52
• x = -12
• x = -44
• x = -13