Respuesta:
Explicación paso a paso:
3X + 2Y = 8
X - Y = - 9 (2)
2X - 2Y = - 18
5X = - 10
X = -10/5
X = - 2
- 2 - Y = - 9
Y = 9 - 2
Y = 7
- 2 - 7 = - 9
----------------------
X - 2Y = 13
4X + Y = 7 (2)
8X + 2Y = 14
9X = 27
X =27/9
X = 3
3 - 2Y = 13
2Y = 3 - 13
2Y = - 10
Y = - 10/2
Y = -5
3 - 2(- 5) = 13
3 + 10 = 13
10 = 13
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Respuesta:
Explicación paso a paso:
3X + 2Y = 8
X - Y = - 9 (2)
3X + 2Y = 8
2X - 2Y = - 18
5X = - 10
X = -10/5
X = - 2
- 2 - Y = - 9
Y = 9 - 2
Y = 7
- 2 - 7 = - 9
----------------------
X - 2Y = 13
4X + Y = 7 (2)
X - 2Y = 13
8X + 2Y = 14
9X = 27
X =27/9
X = 3
3 - 2Y = 13
2Y = 3 - 13
2Y = - 10
Y = - 10/2
Y = -5
3 - 2(- 5) = 13
3 + 10 = 13
10 = 13