Answer:
First choice: m = -4
Step-by-step explanation:
The second equation is already solved for n, so lets's use the substitution method and substitute m - 2 for n in the first equation.
m - 2n = 8
m - 2(m - 2) = 8
m - 2m + 4 = 8
-m + 4 = 8
-m = 4
m = -4
The second equation tells you what 'n' is. It's "m-2" .
So you can simply write "m-2" in place of 'n' in the first equation.
Then the first equation says [ m - 2(m-2) = 8 ], and you should have no trouble solving that.
