One Step Equations with Multiplication and Division

Solve the equation:
-5x = 25

• x = 20

• x = -20

• x = -5

• x = 5

Solve

• x = 20

• x = 9

• x = 1

• x = 15

a=?

• 10

• -24

• -14

• -⅙

Using the "opposite operation" to "undo" and isolate the variable when solving an equation is more commonly called...

• Inverse operations

• math

• variable

• PEMDAS

What is the inverse operation of multiplication?

• addition

• subtraction

• division

• none of the above

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.

How do you solve this equation?

• divide by 3 on both sides

• divide by 3.3 on both sides

• multiply by 3 on both sides

• multiply by 3.3 on both sides

Why do you multiply by 8 on both sides?

• 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 this equation.

• h = 80

• h = 8

• h = 1.25

• h = 12.5