Explicación paso a paso:
3n - 1 = 11
3n = 12
n = 4
2m + 5 = -1
2m = -6
m = -3
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Explicación paso a paso:
3n - 1 = 11
3n = 12
n = 4
2m + 5 = -1
2m = -6
m = -3