Question

what no. should be added to -1 so as yo get 5/7​

Answer 1

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Answer 2

Let the number be x

So,

$= > x + ( - 1) = \frac{5}{7} \\ = > x - 1 = \frac{5}{7} \\ = > x = \frac{5}{7} + 1 \\ = > x = \frac{5 + 7}{7} \\ = > x = \frac{12}{7}$

So the answer is -

$\frac{12}{7}$