SOLUTION: 5m-2n=4 3m+n=9 solve the systems using the addition method.

Algebra ->  Linear-equations -> SOLUTION: 5m-2n=4 3m+n=9 solve the systems using the addition method.      Log On


   

Question 186803This question is from textbook beginning and intermediate algebra
: 5m-2n=4
3m+n=9
solve the systems using the addition method. This question is from textbook beginning and intermediate algebra

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
5m-2n=4
3m+n=9 multiply by 2 & add.
5m-2n=4
6m+2n=18
----------
11m=22
m=22/11
m=2 ans.
5*2-2n=4
10-2n=4
-2n=4-10
-2n=-6
-n=-6/-2
n=3 ans.
Proof:
3*2+3=9
6+3=9
9=9