ANSWER:

8

Yes

12

(1)

4

13

(2) 0

We may both add and subtract fractions if they have a common denominator.

We may add and subtract: 6 2 + 4 3 = 5

, or 1, because they have the common

5

5

5

5

5

denominator

.

We may add and subtract: 12 10

+ 2=4

(True or False)

3

3

3

3

The common denominator is

.

Do the following examples:

(1) 9

+4

9

1

+3

=

8

8

8

8

8

(2) 11

12

+

4

2

=

17

17

17

17

52

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