Question

Simplify the following expression:

- (- 8m - 4n + 7)

A. 8m + 4n - 7

B. 8m + 4n + 7

C. 8m - 4n - 7

D. -8m - 4n - 7

Answer 1

-7 + 8 m + 4 n thus A. is your Answer

Explanation:

Expand the following:

-(-8 m - 4 n + 7)

-(7 - 8 m - 4 n) = -7 - -8 m - -4 n:

-7 - -8 m - -4 n

-(-8) = 8:

-7 + 8 m - -4 n

-(-4) = 4:

Answer: -7 + 8 m + 4 n