Question

Add the difference of $-202$ and $392$ to the sum of $-189$ and $-79.$

Answer 1

Difference of $-202$ and $392$ $=-202-392$

$=-594$………. equation (i)

Sum of $-189$ and $-79=$$-189+\left(-79\right)$

$=-189-79\Rightarrow -268$……. . equation (ii)

By addition of equation (i) and (ii)

$-594+\left(-268\right)=-594-268$

$=-862$

Hence, the required answer is $-862.$