a) 1/4 + 1/2 = 1/4 + 2/4 = 2/3
b) 2/3 + 5/6 = 4/6 + 5/6 = 9/6 = 1 1/2
c) 3/8 - 1/16 = 6/16 - 1/16 = 5/16
d) 1/3 + 7/12 = 4/12 + 7/12 = 11/12
e) 8/15 + 3/5 = 8/15 + 9/15 = 16/15 = 1 1/15
f) 3/5 + 3/10 = 6/10 + 3/10 = 9/10
g) 3/4 - 5/8 =6/8 - 5/8 = 1/8
h) 1/4 - 3/20 = 5/20 - 3/20 = 2/20 = 1/10
i) 7/10 - 3/20 = 14/20 - 3/20 = 11/20
a) 1/3 + 1/2 = 2/6 +3/6 = 5/6
b) 3/4 - 2/5 =15/20 - 8/20 = 7/20
c) 5/8 + 1/7 = 35/56 + 8/56 = 27/56
d) 5/6 - 3/7 = 35/42 - 18/42 =17/42
e) 2/7 + 1/5 = 10/35 + 7/35 = 17/35
f) 7/8 - 2/3 = 21/24 - 16/24 = 5/24
g) 1/9 + 1/7 = 7/63 + 9/63 =16/63
h) 3/5 - 1/3 = 9/15 - 5/15 = 4/15
i) 7/9 - 3/4 = 28/36 - 27/36 = 1/36
a) 7/9 + 4/5 = 35/45 + 36/45 = 71/45 = 1 26/45
b) 4/5 + 5/8 = 32/40 + 25/40 = 57/40 = 1 17/40
c) 5/7 - 1/6 = 30/42 - 7/42 = 23/42
d) 2/3 - 1/10 = 20/30 - 3/30 = 17/30
e) 1/6 + 6/7 =7/42 + 36/42 = 43/42 = 1 1/42
f) 3/4 + 4/5 = 15/20 +16/20 = 31/20 = 1 11/20
g) 5/6 +5/7 = 35/42 + 30/42 = 65/42 = 1 23/42
i) 2/3 - 2/7 = 14/21 - 6/21 = 8/21
a) 3/10 + 8/15 = 9/30 + 16/30 = 25/30 = 5/6
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