x除以45减X除以55等于0.44

问题描述:

x除以45减X除以55等于0.44

X/45-X/55=11/25
X(1/45-1/55)=11/25
1/X=25(1/45-1/55)/11
=[(55-45)/99]/11
=10/1089
所以X=108.9

108.9

x除以45减X除以55等于0.44
x/45-x/55=0.44
两边同乘以495得:
11x-9x=217.8
2x=217.8
x=108.9

x/45-x/55=0.44
两边乘495
11x-9x=217.8
2x=217.8
x=217.8÷2
x=108.9