The value of m in the following system of equations is:

m-2n=8

n=m-2

A) m = - 4

B) m = - 6

C) m = 2

D) None of the choices are correct

N=m-2

m-2n=8, using n from above in this equation yields:

m-2 (m-2) = 8 perform indicated multiplication

m-2m+4=8 combine like terms on left side

-m+4=8 subtract 4 from both sides

-m=4 divide both sides by - 1

m=-4

So the correct answer is A) m=-4