七年级数学
一元一次方程50道练习题(含答案)
1、【基础题】解方程:
=7; (1)2x+1(2)5x-2=8; (3)3x+3=2x+7; (4)x+5=3x-7;
14x-9; (6)x-9=4x+27; (7)(5)11x-2=113x=-x+3; (8)x=x+16.4221.1、【基础题】解方程:
1; (2)10x-3=9; (3)5x-2=7x+8; (4)1-(1)2x+6=(5)4x-2=3-x; (6)-7x+2=2x-4; (7)-x=-35x=3x+;2221xx+1; (8)2x-=-+2. 5332、【基础题】解方程:
(1)4(x+0.5)+x=7;
(2)-2(x-1)=4; (5)11x+1=5(2x+1);
(3)5(x-1)=1;
1-x)=-2; (4)2-(320-x)=3.(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;
(x-2)=12; (4)-2(2-3x)=4x+4; (5)12(6)6-(3x+)=;
2323 (7)(2200-15x)=70+25x; (8)(32x+1)=12.
3、【综合Ⅰ】解方程: (1)
x+2x=; 5413(2)
3-xx+4; =23(5)
(3)(x+1; )=(2x-3)1317(4)(x+1; )=(x-1)14172x-1x+211.=-1; (6)(x-1)=2-(x+2)3425151213(7)(x+14)=(x+20); (8)(x+15)=-(x-7).
14第1页
七年级数学
3.1、【综合Ⅰ】解方程: (1)
1137x-53x-=; (2)=; 42448(3)
2x-15x+119x-2; (4)x-7=;=6826(5)
112x+15x-11x-(3-2x)=1; (6)-=1; (7)(2x+14)=4-2x; 523673102109.25(8)(200+x)-(300-x)=3004、【综合Ⅰ】解方程:
83x-1)-(95x-11)-(22x-7)=30; (1)((3)
(2)
1111x+=x-;2345x-1x+2-=12.0.30.50.5x-10.1x+2-=-1; 0.20.3(4)
【参】
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.
731.1、【答案】 (1)x=-; (2)x=; (3)x=-5; (4)x=-;
526513
1; (5)x=1.(6)x=; (7)x=-; (8)x=6523531; 2、【答案】 (1)x=2.1、【答案】
(2)x=-1; (3)x=; (4)x=-3; (5)x=4; (6)x=9.
(1)x=-7; (2)x=-; (3)x=-11; (4)x=-4; (5)x=; (6)x=第2页
321210;9七年级数学
(7)x=6; (8)x=.
3216; (4)x=7; (5)x=-3、【答案】 (1)x=8; (2)x=; (3)x=-12;5(6)x=3; (7)x=-28; (8)x=-516.3.1、【答案】 (1)x=5; (2)x=1314; (3)x=-1; (6)x=-3; (7)x=78; (8)x=216.
4、【答案】 (1)x=3; (2)x=-3215; (3)x=13;第3页
(4)x=-203; (4)x=292. 55)x=2512; (