Level 1 Practice

When you isolate the variable, what must you do to keep the equation balanced?

x - 3 = 7

• Add 3 to 7

• Subtract 3 from 7

• Add 7 to x

• Subtract 7 from x

How can you isolate the variable in x - 3 = 7?

• add 3 to the left side

• subtract 3 from the left side

• add 7 to the left side

• subtract 7 from the left side

Solve x + 5 = 15

Remember to practice writing out the steps even if it is easy.

x = _____

Solve x - 9 = 8

Remember to practice writing out the steps even if it is easy.

x = _____

1467 + x = 1653

• x = 3120
• x = 186
• x = 286
• x = 3020

• 50
• -12.5
• -50
• 12.5

m+13=21

• m=34
• m=8
• m=273
• m=6

5.    6b = 30

• x = 36
• x = 24
• x = 180
• x = 5

Solve for x:

x + 19.46 = 245.3

• 264.76

• 12.6

• 50.7

• 225.84

• 100

• 120

• 4

• 5