bài 1:gải pt sau
1) x-8=3-2.(x+4)
2)2.(x+3)-3.(x-1)=2
3)4.(x-5)-(3x-1)=x-19
4)7-(x-2)=5.(2x-3)
5)32-4.(0,5y-5)=3y+2
6)3.(x-1)-x=2x-3
7)+2x-4=-12+3x+
8)x.(x-1)-x.(x+3)=15
9)x.(x-1)=x.(x+3)
10)x.(2x-3)-+2=x.(x-5)-1
11)(x-1).(x+3)=-4
12)(x-2).(x-5)=(x-3).(x-4)