Question

4(2m-n) -3(m-n)

m= -15 , n= -18

I worked this and got 144 but my choices are
3
-3
-12
16

im confused?

Answer 1

@Jhannybean

Answer 2

first expand the function

Answer 3

4(2m) -4n -3m + 3n = 8m -4n -3m +3n = (8 - 3)m + (-4 + 3)n

Answer 4

Simplify that.

Answer 5

then just substitute your values of m and n, you should get the right answer

Answer 6

Ive got to head off, goo luck!

Answer 7

Are you still confused?

Answer 8

uh yeah just a tad..