a) 3/4 + 2/5 - 17/20 =
b) 4 3/5 - 1 13/15 + 2 2/3 =
c) 10 1/3 + 2 1/4 - 5 5/6 =
a) 3/4 + 2/5 - 17/20 =15/20+8/20-17/20=23/20-17/20=6/20=3/10
b) 4 3/5 - 1 13/15 + 2 2/3 = 4 9/15-1 13/15+2 10/15=6 19/15-1 13/15=5 6/15=5 2/5
c) 10 1/3 + 2 1/4 - 5 5/6 =10 4/12+2 3/12- 5 10/12=6 7/12-5 10/12=5 17/12-5 10/12=7/12
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a) 3/4 + 2/5 - 17/20 =15/20+8/20-17/20=23/20-17/20=6/20=3/10
b) 4 3/5 - 1 13/15 + 2 2/3 = 4 9/15-1 13/15+2 10/15=6 19/15-1 13/15=5 6/15=5 2/5
c) 10 1/3 + 2 1/4 - 5 5/6 =10 4/12+2 3/12- 5 10/12=6 7/12-5 10/12=5 17/12-5 10/12=7/12