SOLUTION: -13m-(-4n)-12=19 n-6m+(-13)=-8 M= N=

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Question 495823: -13m-(-4n)-12=19
n-6m+(-13)=-8
M=
N=
Answer by NirMath4U(7) About Me  (Show Source):
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-13m+4n=19+12
n=6m+13-8
n=6m+5
-13m+4(6m+5)=31
-13m+24m+20=31
11m=31-20
11m=11
m=1
n=6*1+5=11