Question

what shoukd be added to 7 whole 4 by 15 to get 8 whole 2 by 5​

Answer 1

$\huge\underline\mathfrak\red{Answer:}$

Let the number be = x

$7 \frac{4}{15} + x = 8 \frac{2}{5}$

$\frac{109}{15} + x = \frac{42}{5}$

$x = \frac{42}{5} - \frac{109}{15}$

$x = \frac{126 - 109}{15}$

$x = \frac{17}{15}$