一、解方程:
(1)6x=3x-12(2)2y―=y―3
(3)-2x=-3x+8(4)56=3x+32-2x
(5)3x―7+6x=4x―8(6)7.9x+1.58+x=7.9x-8.42
(7)3(2x+5)=2(4x+3)-3(8)4y﹣3(20﹣y)=6y﹣7(9﹣y)
(9)7(2x-1)-3(4x-1)=4(3x+2)-1(10)(5y+1)+(1-y)=(9y+1)+(1-3y)
(11)2(x-2)+2=x+1(12)2(x-2)-3(4x-1)=9(1-x)
(13)11x+64-2x=100-9x(14)15-(8-5x)=7x+(4-3x)
(15)3(x-7)-2[9-4(2-x)]=22(16)12x-10.3x=15
(17)20.52x-(1-0.52)x=80(18)43x+7=32-2x
(19)53x+5(138-x)=540(20)63x-7(x-1)=3-2(x+3)