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1) 6x - 5y = - 9
2) 4x + 3y = 13
Despejamos x en las dos ecuaciones
6x - 5y = - 9 4x + 3y = 13
6x = - 9 + 5y 4x = 13 - 3y
x = (- 9 + 5y)/6 x = (13 - 3y)/4
Igualamos la dos ecuaciones y multiplicamos en cruz.
(- 9 + 5y)/6 = (13 - 3y)/4
4 (- 9 + 5y) = 6 (13 - 3y)
- 36 + 20y = 78 - 18y
20y + 18y = 78 + 36
38y = 114
y = 114/38
y = 3
El valor de y lo reemplazamos en uno de los despeje de x
x = (13 - 3y)/4
x = (13 - 3 (3))/4
x = (13 - 9)/4
x = 4/4
x = 1
Respuesta
x = 1
y = 3