Question

$\frac{3}{11} + \frac{5}{ 7} = \frac{5}{7} + \frac{3}{11}$
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Answer 1

3/11+5/7=5/7+3/11

→3×7+11×5/11×7=5×11+7×3/7×11

→21+55/77=55+21/77

→76/77=76/77