第三章一元一次方程解方程专项训练2022-2023学年人教版七年级数学上册

第三章一元一次方程解方程专项训练 (4):-2.+2 2 3 (1)8r-5=3x: (5)3x+2=4|x, 2)2红-1.x+2=l. 612 6)2y= (3)5-2|x-3=2-32x-. ：E-xz=E+xs(ZT) 61=0元 3(6) 9 tx-+(II) L-s1- (8) 0 SO 1=z0+060+t0 (0T) +=优+ -xt() xg9=+ -r(8I) kr1=亿*s) xs=(x-Z)e-b (ZI) g-吃 (T) x-x) (ET) (19)4x-2(x+0.5)=17 (22)2.3-56-x 43 (20)3y.1.1=5y.7 31.:1-1. 4 6 (23) 46 (21)3x-6=r-|2x-1): (24) 8-2.x+1-3 0.40.5 4 (25》7x+6=16.3r (28)-4x+6=5x-3: (26)10x-3￥-4=2x+1, (29)3x,2-x.2: (27)-3r+3=1-x·4r: 参考答案 (1)x=1 2-9 (3)x=.1: (4)x=1. (5)x=6 (6)y=.3 (7)x-5 Γ7 (8)y=-1 (9)x=2 aoy月 (11)x=4 (12)x=.3 (13)x=2 a4=号 (15)x=8: (16)x=2. (17)x=.1 (18)x=-22 (19)x=9 (20)y=-1 2-号 (22)x=3 (23)x=.1 (24)x=20 (25)x=1 (26)x=-2 (27)x=.1 (28)x=1 (29)x=0 (30)x=.1