精选一元一次方程50道练习题 (1)2x112x4; (2)0.8x0.10.5x0.7; (3)12x42x352x; (4)3x173x6; (5)x1412x36x13; (6)32[23(12x1)2]2332x; (7)2[111x3(x3)]12(2x103x3) (8)12(2x3)13(2x4)14(2x5)15(2x6).(9)5x+2=7x-8; (10)72x134x123x210; (11)5x1673; (12)722y11212y232y1; (13)2x16x2612; (14)32232x12x2; (15)1x13x23221x12; (16)34[43(12x14)8]32x1; (17)7x12(53x12)823(6x9); x218x(18)6x92; 2(19)(x1)30%(100x)25%5x;23x5x(20)23x42. (21)1611312x1351 4(22)2(2x-1)-4(4x-1)-5(2x+1)-19=0 (23)3x13x5314x46212 (24)0.4x0.90.1x0.50.030.02x0.50.20.03 (25)3212[3(4x1)2]2122x3 (26)2{3[4(5x-1)-8]-20}-7=1 (27)2(0.3x-4)-5(0.2x+3)=9 (28)2[(x+3)-2(x+1)]-5=0 (29)3x-2(x3)x3162x226 (30)x3x40.150.21.6 (31)19{17[15(x234)6]8}1 (32)3x=2x+5 (33)2y+3=y-1 (34)7y=4-3y (35)-215y=3 (36)10x+7=12x-5-3x (37)8x―4+2x= 4x―3 (38).2(3x+4)=6-5(x-7) (39).x2x45231x126 (40)x12[x112(x2)]2 (41)2(2x1)0.0.012.5220x0.23.5 (42)(x5)x2x234x35 (43)4x1.55x0.81.20.50.2x0.13 (44). x-1x3=x26-1 (45). 0.4y0.9y50.30.2y0.5-2=0.3 (46) 3(x+2)-13(2x-3)=2(2x-3)-12(x+2) (47). 13{13[13(13x-2)-2]}-2=0 (48)、5(y+8)―5 = 4(2y―7); (49)、23x33x23x2(13)6; (50)、1.88x1.21.33x25x0.40.3; 答案:(1)x =2;(2)x =—2;(3)x =7;(4)x =1; (5)x =—5;(6)x =313;(7)x =27;(8)x =12. (9)x=5;(10)x78;(11)x=3;(12)y12; (13)x=0;(14)x=6;(15)x617;(16)x74. 8 17.x9 18.x35 19x22530355067 20x1625 21. x=8 22.x=-1 23.x=-3 24.x=9 25.x=185 26.x=1 27、x=-80 28、x=-32 29、529 30、24.96 31、x=1 32)x=5 33)y=-4 34)y=25 35)y=-56 36)x=-12 37)x=16 38.x=3 39.x=-72 40.x=176 41.x25 (42)x=6 ; (43)x=-2 ; 44.x27 45. y9 46.x12 47. x=186 48、 y = 21 49、x=112; 50、x=10; 本文来源:https://www.wddqw.com/doc/66dc543268eae009581b6bd97f1922791788be17.html