Answer:
x = 0
y = 5
Explanation:
2x + y = 5 --------(i)
y = 5 -2x
Plug in y = 5-2x in 3y = 15 - 6x
3*(5-2x) = 15 - 6x
3*5 - 3*2x = 15 - 2x
15 - 6x = 15-2x
-6x = 15 - 2x - 15
-6x = -2x
-6x + 2x = 0
-4x = 0
x = 0
Substitute x = 0 in equation (i)
2*0 + y = 5
0 + y = 5
y = 5