Question

Find the rational numbers that should be multiplied with $\frac{-3}{13}$ to get $39$

Answer 1

Let $x$ be the rational numbers that should be multiplied with $\frac{-3}{13}$ to get $39$

$\Rightarrow \frac{-3x}{13}=39$

$\Rightarrow x=39\times \frac{13}{-3}=-13\times 13=-169$

$\therefore -169$ is the rational number