(1)2x+5=3(x-1),去括号得:2x+5=3x-3,移项合并得:x=8;(2)去分母得:2(x-2)=3(x+1),去括号得:2x-4=3x+3,移项合并得:x=7;(3)去分母得:6-2x+8=3x+9,移项合并得:5x=5,解得:x=1;(4)方程变形得: 10x?20 2 - x+1 2 =3,去分母得:10x-20-x-1=6,移项合并得:9x=27,解得:x=3.