1.147÷5X=7.8 2.40‰X=0.8×3/43.(X-17)÷417=309 4.2/9×18-1/4X=1.55.5X-(7+5又2/3)=2又1/3 6.3又1/2:(X+3)=1/6:27.(X+11.8):9.6=16:12 8.1/3:1/7=(15-X):29.4/X+3=0.6/1.2 10.8X÷(1.8+3)=1.511.21-120‰X=9写得清楚的话高
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![1.147÷5X=7.8 2.40‰X=0.8×3/43.(X-17)÷417=309 4.2/9×18-1/4X=1.55.5X-(7+5又2/3)=2又1/3 6.3又1/2:(X+3)=1/6:27.(X+11.8):9.6=16:12 8.1/3:1/7=(15-X):29.4/X+3=0.6/1.2 10.8X÷(1.8+3)=1.511.21-120‰X=9写得清楚的话高](/uploads/image/z/7838743-31-3.jpg?t=1.147%C3%B75X%3D7.8+2.40%E2%80%B0X%3D0.8%C3%973%2F43.%EF%BC%88X-17%EF%BC%89%C3%B7417%3D309+4.2%2F9%C3%9718-1%2F4X%3D1.55.5X-%EF%BC%887%2B5%E5%8F%882%2F3%EF%BC%89%3D2%E5%8F%881%2F3+6.3%E5%8F%881%2F2%3A%28X%2B3%29%3D1%2F6%EF%BC%9A27.%EF%BC%88X%2B11.8%EF%BC%89%3A9.6%3D16%3A12+8.1%2F3%EF%BC%9A1%2F7%3D%EF%BC%8815-X%EF%BC%89%EF%BC%9A29.4%2FX%2B3%3D0.6%2F1.2+10.8X%C3%B7%EF%BC%881.8%2B3%EF%BC%89%3D1.511.21-120%E2%80%B0X%3D9%E5%86%99%E5%BE%97%E6%B8%85%E6%A5%9A%E7%9A%84%E8%AF%9D%E9%AB%98)
1.147÷5X=7.8 2.40‰X=0.8×3/43.(X-17)÷417=309 4.2/9×18-1/4X=1.55.5X-(7+5又2/3)=2又1/3 6.3又1/2:(X+3)=1/6:27.(X+11.8):9.6=16:12 8.1/3:1/7=(15-X):29.4/X+3=0.6/1.2 10.8X÷(1.8+3)=1.511.21-120‰X=9写得清楚的话高
1.147÷5X=7.8 2.40‰X=0.8×3/4
3.(X-17)÷417=309 4.2/9×18-1/4X=1.5
5.5X-(7+5又2/3)=2又1/3 6.3又1/2:(X+3)=1/6:2
7.(X+11.8):9.6=16:12 8.1/3:1/7=(15-X):2
9.4/X+3=0.6/1.2 10.8X÷(1.8+3)=1.5
11.21-120‰X=9
写得清楚的话高分赏
1.147÷5X=7.8 2.40‰X=0.8×3/43.(X-17)÷417=309 4.2/9×18-1/4X=1.55.5X-(7+5又2/3)=2又1/3 6.3又1/2:(X+3)=1/6:27.(X+11.8):9.6=16:12 8.1/3:1/7=(15-X):29.4/X+3=0.6/1.2 10.8X÷(1.8+3)=1.511.21-120‰X=9写得清楚的话高
1.147÷5X=7.8 5x=147÷7.8=18.84
x=3.77
2.40‰X=0.8×3/4
x=0.8×3/4÷40‰=15
3.(X-17)÷417=309
x-17=309*417=128853
x=128870
4.2/9×18-1/4X=1.5
1/4x=4-1.5
x=10
5.5X-(7+5又2/3)=2又1/3
5x=2又1/3+7+5又2/3
x=3
6.3又1/2:(X+3)=1/6:2
x+3=2*3又1/2:1/6
x=39
7.(X+11.8):9.6=16:12
x+11.8=16*9.6:12
x=1
8.1/3:1/7=(15-X):2
15-x=2*1/3:1/7
x=31/3=10又1/3
9.4/X+3=0.6/1.2
4/x=0.5-3=-2.5
x=-4/2.5=-1.6
10.8X÷(1.8+3)=1.5
8x=1.5*(1.8+3)=7.2
x=0.9
11.21-120‰X=9
120‰X=21-9=12
x=100
不是吧?这种问题?
1.X=3.77
2.X=15
3.X=128870
4.X=10
5.X=3
6.X=39
7.X=1
8.X=10又三分之一
9.X=1.6
10.X=0.9
11.X=100拜托多给点分,我分太少了
1.147÷5X=7.8
5x=147÷7.8=18.84
x=3.77
2.40‰X=0.8×3/4
x=0.8×3/4÷40‰
x=15
3.(X-17)÷417=309
x-17=309*417=128853
x=128870
4. 2/9×18-1/4X=1.5
全部展开
1.147÷5X=7.8
5x=147÷7.8=18.84
x=3.77
2.40‰X=0.8×3/4
x=0.8×3/4÷40‰
x=15
3.(X-17)÷417=309
x-17=309*417=128853
x=128870
4. 2/9×18-1/4X=1.5
1/4x=4-1.5
x=10
5.5X-(7+5又2/3)=2又1/3
5x=2又1/3+7+5又2/3
x=3
6. 3又1/2:(X+3)=1/6:2
x+3=2*3又1/2:1/6
x=39
7.(X+11.8):9.6=16:12
x+11.8=16*9.6:12
x=1
8. 1/3:1/7=(15-X):2
15-x=2*1/3:1/7
x=31/3=10又1/3
9. 4/X+3=0.6/1.2
4/x=0.5-3=-2.5
x=-4/2.5=-1.6
10. 8X÷(1.8+3)=1.5
8x=1.5*(1.8+3)=7.2
x=0.9
11.21-120‰X=9
120‰X=21-9=12
x=100
5x=147÷7.8=18.84
楼主慷慨点吧。。。。。给点分
收起
1.147÷5X=7.8 5x=147÷7.8=18.84
x=3.77
2.40‰X=0.8×3/4
x=0.8×3/4÷40‰=15
3.(X-17)÷417=309
x-17=309*417=128853
x=128870
4. 2/9×18-1/4X=1.5
1/4x=4-...
全部展开
1.147÷5X=7.8 5x=147÷7.8=18.84
x=3.77
2.40‰X=0.8×3/4
x=0.8×3/4÷40‰=15
3.(X-17)÷417=309
x-17=309*417=128853
x=128870
4. 2/9×18-1/4X=1.5
1/4x=4-1.5
x=10
5.5X-(7+5又2/3)=2又1/3
5x=2又1/3+7+5又2/3
x=3
6. 3又1/2:(X+3)=1/6:2
x+3=2*3又1/2:1/6
x=39
7.(X+11.8):9.6=16:12
x+11.8=16*9.6:12
x=1
8. 1/3:1/7=(15-X):2
15-x=2*1/3:1/7
x=31/3=10又1/3
9. 4/X+3=0.6/1.2
4/x=0.5-3=-2.5
x=-4/2.5=-1.6
10. 8X÷(1.8+3)=1.5
8x=1.5*(1.8+3)=7.2
x=0.9
11.21-120‰X=9
120‰X=21-9=12
x=100
收起