SOLUTION: what is 3m-2n=13 and m+2n=7

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Question 182431This question is from textbook Algbera 1
: what is 3m-2n=13 and m+2n=7 This question is from textbook Algbera 1

Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
3m-2n=13........eq 1
m+2n=7..........eq 2
:
add the equations together and the n terms will be eliminated because -2n+2n=-
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we are left with 3m+m=13+7.
:
4m=20
:
highlight%28m=5%29
:
take m's found value and plug it into either equation and solve for n
:
5+2n=7
:
2n=2
:
highlight%28n=1%29