Respuesta:
- 7x - 4y = -3
9x + 4y = 5
-------------------
2x = 2
x = 1
9(1) + 4y = 5
9 + 4y = 5
4y = 5 - 9
y = -1
RPTA: x = 1 ; y = -1
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Respuesta:
- 7x - 4y = -3
9x + 4y = 5
-------------------
2x = 2
x = 1
9x + 4y = 5
9(1) + 4y = 5
9 + 4y = 5
4y = 5 - 9
y = -1
RPTA: x = 1 ; y = -1