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7m - 2n + 34 = 0
1) 7m - 2n = - 34
5m + 3n + 11 = 0
2) 5m + 3n = - 11
1) 7m - 2n = - 34 (3)
2) 5m + 3n = - 11 (2)
21m - 6n = - 102
10m + 6n = - 22
-------------------------
31m + 0n = - 124
31m = - 124
m = - 124/31
m = - 4
El valor de m sustituyo en ecuación 2
5m + 3n = - 11
5 (- 4) + 3n = - 11
- 20 + 3n = - 11
3n = - 11 + 20
3n = 9
n = 9/3
n = 3
Solución :
m = - 4
n = 3
y el segundo por 2