Question

2x-3y=6, 5x-y= 11 ec. simultaneas

Answer 1

2x-3y= 6    
2x=6+3y
x=6/2-3/2y

5x-y=11
5.(6/2-3/2y)-y=11
15-(7,5y)=11
-7,5y=11-15
-7,5y=-4
y=0.5

Answer 2

MÉTODO DE REDUCCIÓN.

1) 2x - 3y = 6       (-1)
2) 5x - y = 11        (3)

- 2x + 3y = - 6
15x - 3y = 33
--------------------
13x + 0 = 27

13x = 27

x = 27/13

Reemplazo el valor de x en ecuación 1.

2x - 3y = 6

2 (27/13) - 3y = 6

54/13 - 3y = 6

- 3y = 6 - 54/13

- 3y = - 24/13

y = -24/13/-3/1

y = -24/39

y = -8/13

Solución : 

x = 27/13
y = -8/13