1)2(3x+1)-x≦3(x+4)
2)7x+4(x-2)>6(1+3x)
3)2(x-1)-3(x+2)<6(1+x)
4)7(y+3)-2(y+2)≧2(5y+1)
5)6(3+5y)-(2+7y)≤5(4+3y)
6)4(3y-1)-3(y-1)>2(3+y)