One-Step Equations with Multiplication and Division

Why do you divide by 5 on both sides?

• 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.

Why do you multiply by 7 on both sides?

• To undo division, you must multiply.

• To balance the equation, you must divide by 7 on both sides.

• To undo multiplication, you must divide.

• To balance the equation, you must multiply by 7 on both sides.

Why do you multiply by 7?

• To undo division, you must multiply.

• To balance the equation, you must divide by 7 on both sides.

• To undo multiplication, you must divide.

• To balance the equation, you must multiply by 7 on both sides.

Why do you multiply by 8?

• To undo division, you must multiply.

• To balance the equation, you must divide by 8 on both sides.

• To undo multiplication, you must divide.

• To balance the equation, you must multiply by 8 on both sides.

Solve the equation.

-8x = -48

Mathematical Equivalence

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What would be the best first step to solving the equation?
-6x=-24

• multiply both sides by -6

• divide both sides by -6

• add 6  to both sides

• subtract -6  from both sides

to solve 6m = 12

• Multiply both sides by 6

• Divide both sides by 6

• Add 6 to both sides

• Subtract 6 from both sides

Solve the equation
3x = 27. 

• x = 24

• x = 81

• x = 9

-5x = 25

• x = 20

• x = -5

• x = -20

• x = 5

Determine the solution to this equation.

6x=18

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