Giải phương trình sau:
1, 3(x+2)-2(x-1)=7
2,. 5(x+2)+3=x+1
3,. 2(x-3)+5(x-1)=7x-1
4,. 6(x-1)+5x+6=11x
5,. 2x+5/3 -2=3x-7/5
6,. x/6+x=2x+1/2
7,. x/4 -2x-1/3=5x/12
8,. (3x+2)(2x-1)=0
9,. (3x-4)(2x+1)(5x-2)=0
10,. x(5x-3)-5x+3=0
11,. 3x-2/x-3 +1= 5/x-3
12,. 3x-2/x-3 -1=2x+1/x-3