Adding and Subtracting Fractions with Unlike Denominators

19/20 - 3/10 = 

• 15/20
• 22/20
• 13/20

1/2 + 1/4 = 

• 3/4
• 2/4
• 3/6

8/15 - 1/5 = 

• 1/10
• 1/3
• 7/15

3/5 - 3/10 = 

• 3/10
• 4/10
• 5/10

7/16 + 3/8 = 

• 8/16
• 10/16
• 13/16

8/9 - 5/6 = 

• 4/18
• 1/18
• 3/18

4/9 - 1/12 = 

• 13/36
• 15/36
• 16/36

1/18 + 5/6 = 

• 5/9
• 6/9
• 8/9

7/8 - 1/6 = 

• 17/24
• 15/18
• 12/24

1/4 - 3/12 = 

• 0
• 4/12
• -1/4