81/20

解答

\frac{81}{20}

4 \frac{1}{20}

十进制

4.05

求解步骤

\frac{81}{20} = 4

余数

1

转换为带分数: 商

\frac{余数}{除数}

\frac{81}{20} = 4 \frac{1}{20}

= 4 \frac{1}{20}

so l v e f or x, 1.5 (x + 8) = 5.7 + 0.8 x

\frac{4}{3} = \frac{- 6 e - 5}{3}

l o g f or m 1.0 5^{x} = 3

e x p an d (4 y - 3) (2 y^{2} + 3 y - 5)

so l v e f or t, 7 t = x