Lesson 4 (fractions).notebook -...

Lesson 4 (fractions).notebook

1

April 27, 2015

SolvingEquationswithFractions

Theeasiestwaytosolveequationswhichcontainfractionsistoeliminatethedenominator. Ifwecangetridofallthefractions,theequationwillbeeasiertosolve.

Practice:Multiplyeachfractionbyawholenumber.(Thewholenumbermustbeamultipleofthedenominator.)

1.

2.

3.

Lesson 4 (fractions).notebook

2

April 27, 2015

4.

5.

6.

7.

Lesson 4 (fractions).notebook

3

April 27, 2015

To solve equations containing fractions, multiply each term by the whole number you choose.  This whole number MUST BE A COMMON DENOMINATOR for all the fractions in the equations.

Examples:  Solve each equation – by eliminating the denominator first.

Lesson 4 (fractions).notebook

4

April 27, 2015

1.

Verify: 

Lesson 4 (fractions).notebook

5

April 27, 2015

2.

Verify:

Lesson 4 (fractions).notebook

6

April 27, 2015

3. 4.

Lesson 4 (fractions).notebook

7

April 27, 2015

5.

6. Another strategy is to

cross multiply.

Lesson 4 (fractions).notebook

8

April 27, 2015

Why can't you use cross multiplication for an equation like?

Lesson 4 (fractions).notebook

9

April 27, 2015

Complete Practice in Booklet

Lesson 4 (fractions).notebook

10

April 27, 2015

1)

2)

3)

4)

5)

6)

Practice in Booklet ­ Page 13

Lesson 4 (fractions).notebook

11

April 27, 2015

7)

8)

9)

Practice in Booklet ­ Page 13

Lesson 4 (fractions).notebook

12

April 27, 2015

10)

11)

12)

Practice in Booklet ­ Page 13

Lesson 4 (fractions).notebook

13

April 27, 2015

13)

14)

15)

Practice in Booklet ­ Page 13