Question

(!) (5/8)+(3/10)
(!!)4 3/4+9 2/5

Answer 1

1.

$\frac{5}{3} + \frac{3}{10}$

$by \: taking \: LCM \: of \: the \: lower \: digits{8 \: and \: 10}$

$we \: got \: 40$

$\frac{5}{8} \times 40 \: + \frac{3}{10} \times 40$

$\frac{25 + 12}{40}$

$\frac{37}{40}$