3-3 Solving Multiplication Equations

3-3 Solving Multiplication Equations

Solve

Solution

GOAL

Find the value of the variable that makes the

equation TRUE.

The value that makes the equation true.

To isolate the variable (have the variable on one

side of the equal sign and numbers on the other).

3-3 Solving Multiplication Equations

DivisionPropert

yOfEqualit

y

Words: If you divide each side of an equation by the

Same number, the two sides remain equal.

 Symbols:

Arithmetic Algebra

14 = 14 5x = 30

= =

2 = 2 x = 6

You can use this property to solve any multiplication

equation.

7

14

7

14

5

5x5

30

3-3 Solving Multiplication Equations

DivisionPropert

yOfEqualit

y

To solve any multiplication equation, you must

divide both sides by the same number

 

Ex. 7y = -63

=

y = -9

7

7y

7

63

3-3 Solving Multiplication Equations

3-3Proble

mSet

1. 5b = 40

2. -3n = -18

3. -20 = 4x

Write and solve an equation for each phrase

7. The product of -9 and a number is 45.