Question

i need help im prealgebra

Answer 1

whats your question?

Answer 2

2
n− m; use m = 7, and n = 8

Answer 3

huh?

Answer 4

i did not under stand that

Answer 5

put in 8 for n and 7 for m

8-7=1

Answer 6

it gives you what the letters are equal to so all u have to do it plug them in to the equation which in your case is n-m

Answer 7

does that make sense?