解一元一次方程50道专项练习题(含答案)
1、【基础题】解方程:
=7; (2)5x-2=8; (3)3x+3=2x+7; (4)x+5=3x-7; (1)2x+1
14x-9; (6)x-9=4x+27; (7)(5)11x-2=
1.1、【基础题】解方程:
113x=-x+3; (8)x=x+16. 422(1)2x+6=1; (2)10x-3=9; (3)5x-2=7x+8; (4)1-
(5)4x-2=3-x; (6)-7x+2=2x-4; (7)-x=- 2、【基础题】解方程:
35x=3x+; 2221xx+1; (8)2x-=-+2. 533(x-1)=1; (x+0.5)+x=7; (2)-2(x-1)=4; (3)5 (1)4
-x)=-2; (5)11x+(320-x)=3. (4)2-(11=5(2x+1); (6)4x-
2.1、【基础题】解方程:
(x+8)-5=0; (2)2(3-x)=9; (3)-3(x+3)=24; (1)5
(2-3x)=4x+4; (6)6-((x-2)=12; (5)123x+)=; (4)-2
232332x+1)=12. 2200-15x)=70+25x; (8)((7)(
3、【综合Ⅰ】解方程: (1)
x+2x3-xx+411=; (2)=1)=(2x-3); (3)(x+; 542337)=(x-1)(4)(x+1; (5)
14132x-1x+211=-1; (6)(x-1)=2-(x+2). 342514)=(x+20)(7)(x+; (8)(x+15)=-(x-7).
3.1、【综合Ⅰ】解方程: (1) (5)
(8)(200+x)-(300-x)=300?
17141512131137x-532x-15x+119x-2x-=; (2)=; (3)=; (4)x-7=; 424486826112x+15x-11x-(3-2x)=1; (6)-=1; (7)(2x+14)=4-2x; 523673102109. 25 4、【综合Ⅰ】解方程:
83x-1)-(95x-11)-(22x-7)=30; (2) (1)( (3)
1111x+=x-; 23450.5x-10.1x+2x-1x+2-=-1; (4)-=12. 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.
73561; (2)x=; (3)x=-5; (4)x=-; 253251; (6)x=; (7)x=-; (8)x=1. (5)x=331.1、【答案】 (1)x=-1; (2)x=-1; (3)x=2、【答案】 (1)x=2.1、【答案】
(1)x=-7; (2)x=-6; (4)x=-3; (5)x=4; (6)x=9. 53110; (3)x=-11; (4)x=-4; (5)x=; (6)x=; 229(7)x=6; (8)x=.
323、【答案】 (1)x=8; (2)x=; (3)x=-16; (4)x=7; (5)x=-152; 5(6)x=3; (7)x=-28; (8)x=-5. 16