Question

what should be subtracted from -8/15 to get 3/10​

Answer 1

$\large\bf\underline\blue{SolutioN}$

Let the subtracted number be x

So, According to question

$⇒x - ( \frac{ - 8}{15} ) = \frac{3}{10}$

$⇒x + \frac{8}{15} = \frac{3}{10}$

$⇒x = \frac{3}{10} - \frac{8}{15}$

$⇒x = \frac{9 - 16}{30}$

$⇒x = \frac{ - 7}{10}$

Verification:-

$⇒x - ( \frac{ - 8}{15} ) = \frac{3}{10}$

• Put x = -7/10

$⇒ \frac{ - 7}{30} - ( - \frac{8}{15} ) = \frac{3}{10}$

$⇒ \frac{ - 7 + 16}{30} = \frac{3}{10}$

$⇒ \frac{ 9}{30} = \frac{3}{10}$

$⇒ \frac{3}{10} = \frac{3}{10}$

Hence number is -7/10.