Question

What should be add to
$7 \frac{3}{11}$
to get
$9 \frac{2}{7}$
?

​

Answer 1

Answer:

first mark as brain list

Answer 2

Answer:

let, a be the required number

$7\frac{3}{11} +a = 9\frac{2}{7}\\or, \frac{80}{11} + a = \frac{65}{7}\\or, a = \frac{65}{7} - \frac{80}{11}\\or, a = \frac{65\cdot 11 - 80\cdot 7}{7\cdot 11}\\or, a = \frac{155}{77}$