1 3x-5x=4+2 2 4/3x=8 0.3x-1=2×2/5x-2
-2x=6 x=6 0.3x-1=4/5x-2
x=-3 0.3x-4/5x=-2+1
-0.5x=-1
x=2
3(y-7)-18+8(2-y)=22
3y-21-18+16-8y=22
3y-8y=22+21+18-16
-5y=45
y=-9
6/5y=7/3+1
6/5y=10/3
y=25/9