Question

what number should be added to - 1 so as to get 5 by 7

Answer 1

x -1 = 5/7
x = 5/7 + 1= 12/7

Answer 2

Let x should be added,

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

x =  $\frac{5}{7} + 1$


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

$x = \frac{12}{7}$

_____________

Then,

$\frac{12}{7}$ should be added.


i hope this will help you


-by ABHAY