Please put the following problems in standard form i really need help?

[Juliet Jiang]

put these in standard form i especially need help with the 6th problem Ax+By=C

2x-8y=16
y=4x+2
2x=y/3-4
x+4/2=y-4/3
x=7
3x-5+y=2y-4
y=-x+2
5x=2y-3
2y=-6