(99-x)/x=1/9怎么解
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(99-x)/x=1/9怎么解
(99-x)/x=1/9怎么解
(99-x)/x=1/9怎么解
x不为0,
(99-x)*9 = x,
891 - 9x = x,
891 = 10x,
x = 89.1
(99-x)/x=1/9怎么解
解,得:
x=9*(99-x)
x=891-9x
x+91x=891
10x=891
x=89.1