(1)移项合并得:x=-11;(2)去括号得:2x-2-3x-6=2x+1,移项合并得:3x=-9,解得:x=-3;(3)去分母得:5x-15-8x-2=10,移项合并得:-3x=27,解得:x=-9;(4)方程整理得:2x-6-5x-20=1.6,移项合并得:-3x=27.6,解得:x=9.2.