Question 808035: 7m+12n=-1
5m-3n=7
Answer by mananth(16946)   (Show Source):
You can put this solution on YOUR website! 7 m + 12 n = -1 .............1
Total value
5 m -3 n = 7 .............2
Eliminate y
multiply (1)by 1
Multiply (2) by 4
7 m 12 n = -1
20 m -12 n = 28
Add the two equations
27 m = 27
/ 27
m = 1
plug value of m in (1)
7 m + 12 n = -1
7 + 12 n = -1
12 n = -1 -7
12 n = -8
n = - 2/3
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