Adding and Subtracting Rational Functions with Like Denominators

At the end of each fraction addition or subtraction problem, I should ______________ if possible.

• add extra fractions

• multiply

• simplify

• beautify

Choose the BEST answer! (Simplify!)

2/12 + 3/12 = ?

• 5/12

• 5/24

• 6/12

• 1/4

Choose the BEST answer! (Simplify!)

13/14 - 11/14 = ?

• 1/7

• 2/14

• 24/14

• 1 and 10/14

Choose the BEST answer! (Simplify!)

9/12 + 4/12 = ?

• 13/12

• 5/12

• 1 and 1/12

• 7

Choose the BEST answer! (Simplify!)

3/9 + 4/9 = ?

• 7/18

• 7/9

• 12/9

• 12/81

2/12 + 3/12

• 5/12

• 5/24

• 6/12

4/5 - 1/5

• 5/5

• 3/5

• 3/0

4/6 - 1/6 = ?

• 5/6

• 1/12

• 3/6

• 5/12

3/9 + 4/9

• 7/18

• 7/9

• 12/9

Solve and SIMPLIFY:

15/20 + 3/20

• 18/20

• 45/20

• 10/20

• 9/10