12/8 = n/4

解答

\frac{12}{8} = \frac{n}{4}

n = 6

求解步骤

\frac{12}{8} = \frac{n}{4}

交换两边

\frac{n}{4} = \frac{12}{8}

约分:

4

\frac{n}{4} = \frac{3}{2}

在两边乘以

4

n = 6

f a c t or p^{2} + 14 p + 40

- 3 (k - 8) - (k + 5) = 23

4 x + 1 = 2 x + 7

s im pl i f y 110 (\frac{75}{110})^{\frac{35}{30}} + 75

9 c (c - 11) + 10 (5 c - 3) = 3 c (c + 5) + c (6 c - 3) - 30