解一元一次方程50道练习题

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解一元一次方程50道练习题

1 / 4 解一元一次方程50道练习题(含答案)

(1)42112xx (2)7.05.01.08.0xx; (3)xxx2532421;

(4)67313xx; (5)31632141xxx; (6)xx2332]2)121(32[23;

(7) (8) .

(9)5x+2=7x-8; (10)01232143127xxx;

(11)37615x; (12)123221211227yyy;

(13)2162612xx; (14)22123223xx;

(15)1212321321xxx; (16)123]8)4121(34[43xx; 解一元一次方程50道练习题

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(17))96(328)2135(127xxx; (18)296182xxx;

(19) ; (20) .

(21)153121314161x (22)2(2x-1)-4(4x-1)-5(2x+1)-19=0

(23)212644531313xxx (24)03.002.003.02.05.01.05.09.04.0xxx

(25)32212]2)141(32[23xx (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-6222163)3(2xxx (30)6.12.0415.03xx

解一元一次方程50道练习题

3 / 4 (31)1}8]6)432(51[71{91x(32)3x=2x+5 (33)2y+3=y-1

(34)7y=4-3y (35)-y52=31(36)10x+7=12x-5-3x

(37)8x―4+2x= 4x―3(38). 2(3x+4)=6-5(x-7) (39).

(40)2)]21(21[21xxx (41)5.32.0202.05.201.0)12(2xx

(42)543322)5(xxxx (43)41.550.81.230.50.20.1xxx

(44). x- = -1 (45). - =

(46) 3(x+2)- (2x-3)=2(2x-3)- (x+2) (47). { [ ( x-2)-2]}-2=0

(48)、5(y+8)―5 = 4(2y―7); (49)、632)331(2332xxx;

解一元一次方程50道练习题

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(50)、3.04.05233.12.188.1xxx;

参考答案

(1)x =2;(2)x =—2;(3)x =7;(4)x =1;

(5)x =—5;(6)x = ;(7)x = ;(8)x = .

(9)x=5;(10)87x;(11)x=3;(12)21y;

(13)x=0;(14)x=6;(15) ;(16) .

17.98x 18.53x 1975063522530x 202516x

21.x=8 22.x=-1 23.x=-3 24.x=9 25.x=

26.x=1 27、x=-80 28、x=-23 29、952

30、24.96 31.x=1

32)x=5 33)y=-4 34)y=52 35)y=-65 36)x=-12 37)x=61

38.x=3 39.x=-27 40.x=617 41.52x

(42)x=6 ; (43)x=-2 ;

44. 45. 46. 47.x=186

48、 y = 21 49、x=21; 50、x=101;