Question

find three rational number between 1 by 5 and 1 by 7

Answer 1

1/5 and 1/7
1×7/5×7 and 1×5/7×5
7/35 and 5/35
(3+1=4)
7×4/35×4 and 5×4 / 35×4
28/140 and 20/140
answer is 29/140,30/140 and 31/140
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