Question

Solucion de 9x - 10y =-9 / 5x + 10y = -5

Answer 1

Respuesta:

X= -1

Y= 0

Explicación paso a paso:

Caso 1 : 9x - 10y = -9

Caso 2 : 5x + 10y = -5

De 1:

-10y = -9 -9x

-y = -9 -9x / -10

De 2:

10y = -5 -5x

y = -5 - 5x / 10

Resolviendo:

-9-9x / 10 = -5-5x / 10

9 + 9x = -5 -5x

9x = -5x - 14

9x + 5x = -14

14x = -14

x = -1

Por lo que: Analizando el Caso 1:

9(-1) - 10y = -9

-9 - 10y = -9

10y = 0

y = 0

Analizando el Caso 2:

5(-1) + 10y = -5

-5 + 10y = -5

10y = 0

y = 0