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Solve the following systems by elimination: 3m – 4n = 1
3m – 2n = -1

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Mlcparra16id
3m - 4n = 1 ... [1]
3m - 2n = -1 ... [2]

[1] - [2]
3m - 4n = 1
-3m + 2n = 1
   -2n = 2
     n = -1

3m - 4n = 1
3m - 4(-1) = 1
3m + 4 = 1
3m = -3
m = -1