Question

2)Resolva este sistema:

K){2(X-3Y)+5Y=6
{4X-Y=5

Answer 1

2)

2x-6y+5y=6
4x-y=5 

2x-y=6  (-1)
4x-y=5

-2x+y=-6
4x-y=5

2x=-1
x=-1/2

2(-1/2)-Y=6
-2/2-Y=6
-1-Y=6
-Y=6+1
-Y=7 (-1)
Y=-7 

R= S[X=-1/2, Y=-7]