SOLUTION: Solve by substitution method. 5m+n=23 m-9n=69 Solution type in ordered pair.

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Question 446178: Solve by substitution method.
5m+n=23
m-9n=69
Solution type in ordered pair.
Answer by The One(11) About Me  (Show Source):
You can put this solution on YOUR website!
5m+n=23
m-9n=69
n=-5m+23
m-9n=69
n=-5m+23
m-9(-5m+23)=69
n=-5m+23
m+45m-207=69
n=-5m+23
46m-207=69
n=-5m+23
46m=207+69
Add 69 to 207 to get 276.
n=-5m+23
46m=276
n=-5m+23

n=-5m+23
m=6
n=-5(6)+23
m=6
n=-30+23
m=6
Add 23 to -30 to get -7.
n=-7
m=6
n=-7
m=6