x^2-2x-3
2(x+4)=12
x+x+x=60
x+y+y=30
y-2x=3
8x+4y+5+2y-2x
3=5/6+c
find the value of c
z+x+y=
4=x-2
x+x+x=30
3=5/12(2)+c
-4=x-2