What should be added to $\frac{2}{5}$ to get $-1$?

Given :

The given number is $\frac{2}{5}$.

To do :

We have to find the number that should be added to $\frac{2}{5}$ to get $-1$.

Solution :

Let the number to be added to $\frac{2}{5}$ to get $-1$ be x.

Therefore,

$\frac{2}{5} + x = -1$

$x = -1 -\frac{2}{5}$

$x = \frac{(-1\times 5-2)}{5}$

$x = \frac{(-5-2)}{5}$

$x = \frac{-7}{5}$.

The number to be added is $\frac{-7}{5}$.

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Updated on: 10-Oct-2022

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