1/8÷(X-1/4)×4/15=1/5解题过程一定要清楚

问题描述:

1/8÷(X-1/4)×4/15=1/5
解题过程一定要清楚

原式:1/8*4/15÷(X-1/4)=1/5
1/30÷(X-1/4)=1/5
(X-1/4)=1/30÷1/5
X-1/4=1/6
X=1/4+1/6
X=5/12

原式=1/8×(4/15X-1/15)=1/5X-1/20
5×(4/15X-1/15)=8X-4
4/3X-1/3=8X-4
11/3=20/3X
X=11/20

原式变为
(1/8)*(4/15)=(1/5)*(x-1/4)
1/30=x/5-1/20
1/12=x/5
x=5/12

同楼上
原式= (1/8)*(4/15)=(1/5)*(x-1/4)
1/30=x/5-1/20
1/12=x/5
x=5/12