Question

（X-X×9%）=91方程怎么做？

Answer 1

解析如图：

Answer 2

x_xx9／100＝91，x_0.09x=91，0.91x=91，x=100。所以解方程得x等于100

Answer 3

（X-X×9%）=91方程怎么做？
（X-X×9%）=91

（X-X×0.09)=91

0.91X=91
X=91/0.91
X=100

Answer 4

X - X×9% = 91
0.91X = 91

X = 100

Answer 5

x等于100，望采纳。