Question 90433
3x-y=0 or -y=-3x or y=3x now substitute 3x for y in the othere equation
3x+3x=6
6x=6
x=6/x
x=1 answer.
3*1+y=6
3+y=6
y=6-3
y=3 answer.
proof
3*1-3=0
0=0