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一元一次方程50道练习题(含答案)
1、【基础题】解方程:
(1)2x+1=7; (2)5x-2=8; (3)3x+3=2x+7; (4)x+5=3x-7; (5)11x-2=14x-9; (6)x-9=4x+27; (7)
1.1、【基础题】解方程:
(1)2x+6=1; (2)10x-3=9; (3)5x-2=7x+8; (4)1-x=3x+;
113
x=-x+3; (8)x=x+16. 422
3
252
(5)4x-2=3-x; (6)-7x+2=2x-4; (7)-x=-x+1; (8)2x-=-+2.
2、【基础题】解方程:
(1)4(x+0.5)+x=7; (2)-2(x-1)=4; (3)5(x-1)=1; (4)2-(1-x)=-2; (5)11x+(320-x)=3. 1=5(2x+1); (6)4x-
2.1、【基础题】解方程:
(1)5(x+8)-5=0; (2)2(3-x)=9; (3)-3(x+3)=24; (4)-2(2-3x)=4x+4; (6)6-((x-2)=12; (5)123x+)=; (7)(2200-15x)=70+25x; (8)(32x+1)=12.
3、【综合Ⅰ】解方程: (1)
2
513x3
2323
x+2x3-xx+411
; (3)(x+; =; (2)=1)=(2x-3)
542337
1
3
2x-1x+211
. =-1; (6)(x-1)=2-(x+2)
342515
12
13
(4)(x+; (5)1)=(x-1)
1
417
(7)(x+; (8)(x+. 14)=(x+20)15)=-(x-7)
1
4
3.1、【综合Ⅰ】解方程: (1)
1137x-532x-15x+119x-2
; (4)x-7=; x-=; (2)=; (3)=
424486826112x+15x-11x-(3-2x)=1; (6)-=1; (7)(2x+14)=4-2x; 52367310
210
9. 25
(5)
(8)(200+x)-(300-x)=300
4、【综合Ⅰ】解方程:
(1)(83x-1)-(95x-11)-(22x-7)=30; (2)
1111
x+=x-; 2345
(3)
0.5x-10.1x+2x-1x+2
-=12. -=-1; (4)
0.20.30.30.5
【参考答案】
1、【答案】 (1)x=3; (2)x=2; (3)x=4; (4)x=6;
(5)x=; (6)x=-12; (7)x=4; (8)x=-32.
7
3
1.1、【答案】 (1)x=-; (2)x=; (3)x=-5; (4)x=-;
5
26513
(5)x=1; (6)x=; (7)x=-; (8)x=1.
2
353
2、【答案】 (1)x=1; (2)x=-1; (3)x=; (4)x=-3; (5)x=4; (6)x=9.
6
5
2.1、【答案】
(1)x=-7; (2)x=-; (3)x=-11; (4)x=-4; (5)x=; (6)x=
3
21210; 9
(7)x=6; (8)x=.
32
3、【答案】 (1)x=8; (2)x=; (3)x=-16; (4)x=7; (5)x=-;
1
525
(6)x=3; (7)x=-28; (8)x=-
5
. 16
3.1、【答案】 (1)x=5; (2)x=
132025
x=-x=; (3)x=-; (4); (5); 1
14312
(6)x=-3; (7)x=; (8)x=216.
7
8
4、【答案】 (1)x=3; (2)x=-
326429
; (3)x=; (4)x=. 15132
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