equations and expressions

Solve the equation. Check your solution.

• 72
• .5
• ¹/₂
• 2

Solve the equation. Check your solution.

• 24
• ¹⁴⁷/₈ or 18 ³/₈
• 168
• -24

Solve the equation. Check your answer.
-2.5b = 20.5 

• 8.2
• -0.12
• 0.12
• -8.2

Evaluate: -35 + y= 70

• 35

• -35

• 105

• -105

Solve the equation:
-2.6 + x = -4.6

• x = 2
• x = -2
• x = 7.2
• x = -7.2

Solve

• 9.7
• 7.9
• 97
• 79

• subtract both sides by 2

• add both sides by 2

• multiply both sides by 2
  

• divide both sides by 2

• subtract both sides by 9

• add both sides by 9

• multiply both sides by 9

• divide both sides by 9

Why do you divide by 5?

• To undo division, you must multiply.

• To balance the equation, you must divide by 5 on both sides.

• To undo multiplication, you must divide.

• To balance the equation, you must multiply by 5 on both sides.