化简 (2/3)(9/5)(5/4)

解答

化简

(\frac{2}{3}) (\frac{9}{5}) (\frac{5}{4})

\frac{3}{2}

十进制

1.5

求解步骤

(\frac{2}{3}) (\frac{9}{5}) (\frac{5}{4})

(\frac{2}{3}) (\frac{9}{5}) (\frac{5}{4}) = \frac{2}{3} \cdot \frac{9}{5} \cdot \frac{5}{4}

= \frac{2}{3} \cdot \frac{9}{5} \cdot \frac{5}{4}

交叉约去公约数:

5

= \frac{2}{3} \cdot \frac{9}{4}

\frac{2}{3} \cdot \frac{9}{4} = \frac{3}{2}

= \frac{3}{2}

s im pl i f y \frac{5 ^{12} \cdot c ^{10} \cdot d ^{2}}{5 ^{9} \cdot c ^{9}}

∣ 4 x - 4 ∣ < 12

(x + 5)^{2} = 50

12 x + 5 = 13 x

\frac{5 x - 1}{3} = \frac{3 x + 1}{5}