Question

find the sum of additive inverse of( 5 m + 7 n) and additive inverse of (-2 m - 3 n)​

Answer 1

The Additive inverse of an expression is the value or expression that should be added to it to obtain 0

Thus the additive inverse of 5m+7n is -5m-7n

and the additive inverse of -2m -3n is 2m+3n

Tip- to check your answer just try adding the original expression and your answer.

Hope this helps...........