Respuesta:
2.-
* 3x + 5y = 7
3x = 7 - 5y
x =
* 2x - y = -4
2x = -4 + y
→ Igualamos para hallar "y"
14 - 10y = -12 + 3y
14 + 12 = 10y + 3y
26 = 13y
| 2 = y |
→ Reemplazamos para hallar "x"
| x = -1 |
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Respuesta:
2.-
* 3x + 5y = 7
3x = 7 - 5y
x =
* 2x - y = -4
2x = -4 + y
x =
→ Igualamos para hallar "y"
14 - 10y = -12 + 3y
14 + 12 = 10y + 3y
26 = 13y
| 2 = y |
→ Reemplazamos para hallar "x"
x =
x =
x =
x =
| x = -1 |