Question

Answer this question
$what \: should \: be \: added \: to \: 7 \frac{4}{15} \: to \: get \: 8 \frac{2}{5} ?$

Answer 1

let x is added to
$7 \times \frac{4}{15} \: \: to \: get \: 8 \times \frac{2}{5} \\ \\ so \\ \\ \frac{109}{15} + x = \frac{42}{5} \\ \\ x = \frac{42}{5} - \frac{109}{15} \\ \\ x = \frac{126 - 109}{15} \\ \\ x = \frac{17}{15} \\ \\ or \\ \\ x = 1 \times \frac{2}{15}$