Question

resolver 2y=x,+6 4y=5x+6

Answer 1

2y= x+6
y= (x+6)/2
 
4y = 5x+6
4(x+6)/2 = 5x+6
2(x+6)= 5x + 6
2x + 12 = 5x + 6
3x = 6
x= 6/3 
x= 2

y= (2 + 6 )/2 
y= 8/2
y=4

Answer 2

2y = x+6........2y-6 = x
Reemplazamos en la segunda ecuación:
4y = 5(2y-6)+6
4y = 10y-30+6
24 = 6y
4 = y
2 = x