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2) u - 2v = 2 (1)
4u + 2v = - 8
u - 2v = 2
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5u + 0v = - 6
5u = - 6
u = - 6/5
Reemplazo el valor de u en ecuación 1
2u + v = - 4
2 (- 6/5) + v = - 4
- 12/5 + v = - 4
v = - 4 + 12/5
v = (- 4 * 5 + 12)/5
v = (- 20 + 12)/5
v = - 8/5
u = - 6/5
v = - 8/5