3/8 x+1/6 x+5/12 x=69

解答

\frac{3}{8} x + \frac{1}{6} x + \frac{5}{12} x = 69

x = 72

求解步骤

\frac{3}{8} x + \frac{1}{6} x + \frac{5}{12} x = 69

乘以最小公倍数

23 x = 1656

两边除以

23

x = 72

- 2 (7 x) = - 28

\frac{y - 2}{6} = - 2

so l v e f or x, 2 y + 8 x = 2

so l v e f or y, 2 y - x = 4

- 8 = - \frac{6}{5} n