7/20 + 9/10 = 7/20 + 18/20 = 25/20 = 5/4
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10 + 7 + 3 = 20
7 over 10 plus 7 over 10 is 14 over 10 or 1.4
Suppose the answer is x.Then x + 1/2 = 7/20 so that x = 7/20 - 1/2 = 7/20 - 10/20 = -3/20
7/10 + 7/10 = 7/5
7 over 10