简易方程计算题练习

100+x=120      x+30=70      x-40=50      x-20=30      x+1.3=5.7  

X+2.6=3.2       4.5+x=6.3       x-3.7=2.3       x-2.5=4.6       x-0.3=2.1

二：未知数前是乘号或除号的方程

3x=18       2x=9       2.5x=7.5       3x=4.8       3x=2.4

4x=0.1       1.7x=5.1       0.8x=10       x÷3=6       3x÷7=6

2x÷3=9      2x÷5=10      3x÷2=12     4x÷3=12       2x÷9=4

三：

2x+4=16       3x+7=28       4+2x=17       6+3x=21       4x-3=17

2x-7=13       1.2x+3.5=5.9       3.1x-1.2=5       1.2x-3=1.8       4+3x=38

7+5x=19.5       5x-3.2=4.7

四：含有括号的方程

3（x-2）=17       2（x-1.3）=4.6       1.2（x-2）=4.8       0.3（x-4）=12

5（4+x）=40      0.6（x+1.2）=3.6      2（5+2x）=13       3（3x+2）=42

0.2（2x+4）=9       （3x-4）×2=22       （2x+13）×3=81       （4x+10）×2=50

2（2x+1.2）=4.8       4（2x-0.3）=24       2（0.2x0.4）=9       3（0.5x-1.4）=9.6

（2x+4）÷2=16      （3x+7）÷3=28      （4+2x）÷4=17       （ 6+3x）÷2=21

(4x-3) ÷2=17      ( 2x-7) ÷4=13       (1.2x+3.5) ÷2=5.9       (3.1x-1.2) ÷2=5

(1.2x-3) ÷3=1.8       (4+3x) ÷3=38       (7+5x) ÷2=19.5       (5x-3.2) ÷2=4.7

五：能计算的先计算再解方程 

2x+7+6=36       4x+5+3=24       8+2x+3=27        2x+16-7=30

17+4x-5=40        9.5+2x-3.2=20.7      14.3+4x+-9.6=20       2x+16-7=30

2x-3+12=40       4x-7+13=50     5x-3.2+10.2=30       2x-3+4.5=10

2x-4.2+7.2=9.8       4x-3+4=21       2x+7-2.5=10

x+x-3=9       2x+x-5=10       10+ x+3x=20       6+ x+2x=15        12+ 3x-2x=71

6+ 4x-2x=20       10+3 x-x=40        4x+5-2x=20       3 x-7-x=25

3x+x+7+3=40       2x+x+2+5=28       9+1+5X-X=30       12-4+4X-2X=30

4x-x+5-3=23       5x-x+7-2=25       5x-2-3=20       4x-6-3=21       2x-3+7=24       4x-2+6=28        2x-6-1=21        2x-4-2=20

六：未知数是减号的方程

20-x=9       30-x=10       4.5-x=1.8       4.3-x=1.5       18.6-x=9.7

17.5-x=7.3       19.8-x=10.9       13.2-x=0.7       14.3-x=4.7       4.2-x=2.7

20-2x=4       30-3x=6       50-4x=18       20-2x=13       18.9-2x=3.2

21.3-2x=7      40-1.2x=4     13.7-0.8x=2.2     20.2-0.2x=4.7       14.3-0.4x=2.3

37-x-2x=4       18.3-2x-x=0.9       13.2-x-3x=3.2       4.7-0.1x-0.3x=4.3

3.6-0.4x-0.1x=1.2       10+4x-2x=2        20-4x+3x=5       20-5x+3x=3

12+6x-3x=3       14-6x+2x=2        6.4+3x-x=2       7.2+3x-6x=4

6.4+2x-4x=3        3.2-3x+x=2     

3(20-x)=6       2(15-2x)=4       3(30-2x)=12       4(12-3x)=12       2(15-3x)=3

2(13-2x)=7       3(14-x)=6       2(21-2x)=16       4(13-2x)=24       

七：未知数前是除数的方程

18÷x=6       24÷x=4       20÷x=5       16÷x=2       9÷x=2

7÷x=4       12÷x=3       15÷x=4       3÷x=2       6÷x=2

18÷2x=4       30÷3x=5       24÷3x=2       33÷3x=11       42÷2x=7

63÷4x=9       12÷2x=4       36÷4x=2       40÷5x=4       21÷2x=3