化简 x/(x/y)

解答

化简

\frac{x}{\frac{x}{y}}

y

求解步骤

\frac{x}{\frac{x}{y}}

使用分式法则:

\frac{a}{\frac{b}{c}} = \frac{a \cdot c}{b}

= \frac{x y}{x}

约分:

x

= y

s im pl i f y (- 8)^{\frac{2}{3}}

s im pl i f y (8 a^{9})^{\frac{1}{3}}

(1 + 3 x) (1 + 2 x) = (5 - 3 x) (1 - 2 x)

x + 9 > 3

3 x + 7 \geq 3