1一元一次方程练习卷(一)姓名:_________班级:____________成绩:_______________(1)3x=5x-4(2)7x-5=x+2(3)7x=6x+12(4)16=4x(5)15-x=2x(6)3(y+4)=12;(7)4x-3(20-x)=6x-7(9-x)(8)10y+7=12y-5-3y(9)2(3y-4)+7(4-y)=4y(10)2-(1-z)=-2(11)=(12)(2y+3)=8(1-y)-5(y-2);(13)3x-[1-(2+3x)]=7(14)=x-2(15)1-=.(16)-=0.5(17)(18)43[34(15x−2)−6]=1(19)3x+12−2x−23=x−1;(20)23[32(14x−1)-412]=x+2(21)3(2y+1)=2(1+y)+3(y+3)(22)(46)12{x-12[x-12(x-12)]}=1(23)20%+(1-20%)(320-x)=320×40%(24)3x-26+6x-9=12x+50-7x-5;3(25)