Question

.What should be added to 57/7to get 15?​

Answer 1

Answer:

let the number added be x

:•

$\frac{57}{7} + x = 15 \\ \frac{57 + 7x}{7} = 15 \\ 57 + 7x = 105 \\ 7x = 105 - 57 \\ x = \frac{48}{7} \\ x = 6 \times \frac{6}{7}$

x= 6 6/7

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