# Divide the Sum of − 13 5 and 12 7 by the Product of − 31 7 and − 1 2 . - Mathematics

Sum

Divide the sum of $\frac{- 13}{5}$ and $\frac{12}{7}$ by the product of$\frac{- 31}{7} \text{and} \frac{- 1}{2} .$

#### Solution

$(\frac{- 13}{5} + \frac{12}{7}) \div (\frac{- 31}{7} \times \frac{- 1}{2})$
$= \frac{- 13 \times 7 + 12 \times 5}{35} \div \frac{31}{14}$
$= \frac{- 91 + 60}{35} \div \frac{31}{14}$
$= \frac{- 31}{35} \times \frac{14}{31}$
$= \frac{- 2}{5}$

Is there an error in this question or solution?

#### APPEARS IN

RD Sharma Class 8 Maths
Chapter 1 Rational Numbers
Exercise 1.7 | Q 13 | Page 36