Question

The sum of two numbers is $-\frac{7}{5}$. If one of them is $-3$, find the other number

Answer 1

Let the numbers be $x$ and $y$

Given$:$Sum$=x+y=\frac{-7}{5}$

One of them:Let $x=-3$

$\Rightarrow -3+y=\frac{-7}{5}$

$\Rightarrow y=\frac{-7}{5}+3=\frac{-7+15}{5}=\frac{8}{5}$

$\therefore$ the other number is $\frac{8}{5}$