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- (15)1-=. (16)-=0.5 (17) (18) (19) (20)()-4=x+2 (21)3(2y+1)=2(1+y)+3(y+3) (22)(46)x-x-(x-)=1 (23)20%+(1-20%)(320-x)=32040% (24)3x-26+6x-9=12x+50-7x-5; (25) 3