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2) - x + y = 3 (3)
3x - 5y = 2
- 3x + 3y = 9
---------------------
0x - 2y = 11
- 2y = 11
y = 11/-2
y = - 11/2
Reemplazo el valor de x en ecuación 2
- x + y = 3
- x + (- 11/2) = 3
- x - 11/2 = 3
- x = 3 + 11/2
- x = (3 * 2 + 11)/2
- x = (6 + 11)/2
- x = 17/2
x = - 17/2
x = - 17/2
y = - 11/2