Question

What number should be added to -1 so as to get $\frac{5}{7}$ ?

Answer 1

Sum of two numbers $=\frac{5}{7}$

One number = -1

$\therefore$ Second number $=\frac{5}{7}-(-1)$

$=\frac{5}{7}+\frac{1}{1}$

$=\frac{5+7}{7}=\frac{12}{7}$