SOLUTION: Solve by substitution method. Thank you. 7m+n=49 m-3n=29

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Question 310738: Solve by substitution method. Thank you.
7m+n=49
m-3n=29
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
7m+n=49
m-3n=29 or m=29+3n
7(29+3n)+n=49
203+21n+n=49
203+22n=49
22n=-154
n=-7
m-3(-7)=29
m+21=29
m=8