Question

Fill in the blank

$13+\_\_\_=0$

Answer 1

$13+\_\_\_=0$

Let x is required value

$13+\mathbf{x}\mathbf{}=0$

On adding both side $\left(-13\right)$ then, we have

$13+\mathbf{x}+\left(-13\right)=0+\left(-13\right)$

$\mathbf{x}=-13$

Hence $-13$ is the required value