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八分之七x减五分之二x等于一
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咨询记录 · 回答于2023-02-14
八分之七x减五分之二x等于一
您好很高兴为您解答
7/8x-2/5x=1(35-16)x/40=1x=40/19
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解方程是使方程左右两边相等的未知数的值,叫做方程的解。求方程全部的解或判断方程无解的过程叫做解方程。必须含有未知数等式的等式才叫方程。等式不一定是方程,方程一定是等式。
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8/15÷2/3+1/5,的和
8/15÷2/3+1/5=4/5+1/5=1
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详细过程
8/15÷2/3+1/5=(8/15)×(3/2)+1/5=4/5+1/5=(4+1)/5=1
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1/2×2/5+9/10÷9/20
1/2×2/5+9/10÷9/20=1/5+9/10×(20/9)=1/5+2=11/5
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1-0点8×3/4的和,除以4/5
21乘3/4,除以7/5
3/4-1/9的差乘4×9
1-0.8*(3/4)=0.40.4÷(4/5)=0.5![](https://s.bdstatic.com/common/openjs/emoticon/img/face_01.png)
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21*(3/4)÷(7/5)=15.75÷1.4=11.25![](https://s.bdstatic.com/common/openjs/emoticon/img/face_01.png)
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(3/4-1/9)*4*9=23/36*4*9=23
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