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初一数学一元一次方程应用题_计算题200题

发布时间:2014-01-31 16:42:51  

.解下列方程.

12

13

(x?1)]?(2x?1) 34

4?3x?

(?1)?3?2x?3 9. x?4?x?5?x?3?x?2 ??3?22532?

6.4x-3(20-x)=6x-7(9-x) 7.[x?8.

10.1-2(2x+3)=-3(2x+1) 11. 2y?1 -1= y

12.3?y +y =7y?6 13. 2814.7x+6=8-3x 1516,

y5-y?1y?22

=1-5 17 18, 4?6x?2x?1

2

?3

19,x?12?3x2?3

?1 2021,2x-15x3--1

6=1 2223,

2x?1x?23?2

?1 2425,4x?3(20?x)?3 2627,6x-7=4x-5 2829,2(3y?1)?7(y?2)?3 3031,

x-35-x-4

3

=1 3233,27(3x+7)=2-1.5x 3435,80% ·x =(x+22)·75% 3637,

2x?32?3x

3?1?

2 3839,3?x2?23(x?4) 4041,15?(7?5x)?2x?(5?3x)3

x?0.6 +x = 0.1x?1

0.40.3,4x-3(20-x)=6x-7(9-x)

,1.8?8x1.3?3x5x?01.2-2=.40.3

3x?14- 5x?76 = 1 , 4?3(2?x)?5x

,x?1x?23?6?

4?x

2 ,

3

?x?

6

?1

x?13?2x

, 2?3?1

, x3x?15x?3

3?2?4?

6

, 2x-13=

2x?16-1 , 2x?15x?13-6

=1

x3?1?2?

2??3?4??

??4 , x?(7?8x)?3(x?2) , x?x?1x?22?2?

3

, 2x?15x?1

6?8

?1

42

43,

1?1x0.18?0.03x?

?? 44, y?y?8?1??1 ??3?30.50.02?

45, 15?(7?5x)?2x?(5?3x)

46,

1?12x?15x?1???1 47, ?y??y?8???1

6848,

x0.18?0.5?0.03x

0.02

?1 1)3(x-2)=2-5(x-2) (3) 3(x?1)?2(x?2)?2x?3 (5) 2x-1x+23 =2 +1 (7)

x?8

3

??x (9 ) 34x?0.4?12x?0.3 (11) 3y?12?2?5y?74

3

(13) 1?m2?3?3m4?1 (15)x?1?xx?23?6?1 (17) 12(x-3)=2-12(x-3) (19) x?10.2?x?30.01?3 (20) (21)x?1x?243?6?

?x2

(22) (23)

12[x?12(x?1)]?2

3

(x?1) (25)2x?

13??x

3

?2 (27)

x?32?x?92x?16?3

?3 3?3?

(2) 2(x+3)-5(1-x)=3(x-1) (4) 3(x?2)?1?x?(2x?1) (6) 13?x?12

?1

(8) 3?1.2x?45x?12

(10) 3x?14x?22?5

?1

(12) 53?6x??7

2

x?1

(14) y?y?1y?2

2?2?5 (16) 3?xx?8

2?3?1

(18)x?2x?10.2?0.5?3

x?22x?4?36?1

3?2??4??1?2?

?x?3???3???2x (24)2372(26)3[2(x+1)-8]-2x-7=1(28)1?0.7?3x0.0.8?3x?1

0.4?x

(29) ; (30) ; (31) ;

(32) ; (33)

(34) ;

(35) ;

(36) ;

(37) ;

(38) ; (39) ;

(40) (41)

(42) ; (43)

(44) ; (45) ;

(46) ; (47) ;

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