(1)去分母得,2(2x+1)-(10x+1)=6,去括号得,4x+2-10x-1=6,移项得,4x-10x=6+1-2,合并同类项得,-6x=5,x的系数化为1得,x=- 5 6 ;(2)把原式的分母化为整数得, 10x?20 2 - 10x+10 5 =3,去分母得,5(10x-20)-2(10x+10)=30,去括号得,50x-100-20x-20=30,移项得,50x-20x=30+100+20,合并同类项得,30x=150,x的系数化为1得,x=5.