Question

{5x - y = 34
{3x - 4y = 0

Answer 1

5x-y=34 (-4)
3x-4y=0
  
-20x +4y =-136
3x -4y=0
-17x=-136 (-1)
17x=136
x=136/17
x =8

3x -4y =0
3(8) -4y=0
24 -4y=0
-4y=-24 (-1)
4y=24
y=24/4
y=6