What should be added to 6 3/5to get 15 ?

1.	What should be added to 6 3/5to get 15 ?
Answer» ANSWER: $8\frac{2}{5} \: should \:be \: added \:to\: 6\frac{3}{5}\\to\:get \: 15$ Step-by-step EXPLANATION: $Let \: x \: should \:be \: added \:to 6\frac{3}{5}\\to\:get \: 15$ $6\frac{3}{5} + x = 15$ $\implies \frac{33}{5} + x = 15$ $\implies x = 15 - \frac{33}{5}$ $\implies x = \frac{75-33}{5}$ $\implies x = \frac{42}{5}$ $\implies x = 8\frac{2}{5}$ THEREFORE., $8\frac{2}{5} \: should \:be \: added \:to\: 6\frac{3}{5}\\to\:get \: 15$ •••♪

Answer»

$8\frac{2}{5} \: should \:be \: added \:to\: 6\frac{3}{5}\\to\:get \: 15$