1. 3-7 Solving Fraction Equations: Multiplication
Course 1
Note: Unit 3 Test: Tuesday Nov. 15
Warm Up
Lesson: Solving Equations by
Multiplying and Dividing
Worksheet and Homework

2. 3-7 Solving Fraction Equations: Multiplication Warm Up Solve.
Course 1
3-7
Solving Fraction Equations: Multiplication
Warm Up
Solve.
1. x – 5 = 17
2. 5x = 125
3. x + 12 = 86
4. 9x = 108
x = 22
x = 25
x = 74
x = 12

3. 3-7 Learn to solve equations by multiplying and dividing fractions.
Course 1
3-7
Solving Fraction Equations: Multiplication
Learn to solve equations by multiplying and dividing fractions.

4. 3-7 Solving Fraction Equations: Multiplication Remember!
Course 1
3-7
Solving Fraction Equations: Multiplication
Dividing by a number is the same as multiplying by its reciprocal.
Remember!

5. Additional Example 1A: Solving Equations by Multiplying and Dividing
Course 1
3-7
Solving Fraction Equations: Multiplication
Additional Example 1A: Solving Equations by Multiplying and Dividing
Solve the equation. Write the answer in simplest form. 2 5 __
A. 7x = 7x 1 __ 1 7 __ 2 5 __ 1 7 __
• = •
Multiply both sides by the reciprocal of 7.
2 • 1
5 • 7
____
x = 2 35 __
x =
The answer is in simplest form.

6. Additional Example 1B: Solving Equations by Multiplying and Dividing
Course 1
3-7
Solving Fraction Equations: Multiplication
Additional Example 1B: Solving Equations by Multiplying and Dividing
Solve the equation. Write the answer in simplest form. 5y 8 __
B = 6 5 8 __ 5y 8 __ 5 8 __ 6 1 __ 5 8 __
÷ = ÷
Divide both sides by 5 8
Multiply by the reciprocal of __ 5y 8 __ 8 5 __ 6 1 __ 8 5 __
• = • 48 5 __ 3 5 __
y = , or 9

7. 3-7 Solving Fraction Equations: Multiplication Try This: Example 1B
Course 1
3-7
Solving Fraction Equations: Multiplication
Try This: Example 1B
Solve the equation. Write the answer in simplest form. 1 7 __
B. 3x = 3x 1 __ 1 3 __ 1 7 __ 1 3 __
• = •
Multiply both sides by the reciprocal of 3.
1 • 1
7 • 3
____
x = 1 21 __
x =
The answer is in simplest form.

8. Homework Pg
# 1-19 odd, 21, odd, 37, 39