x/2-(x+14)/3+(x+7)/9 =0

解答

\frac{x}{2} - \frac{x + 14}{3} + \frac{x + 7}{9} = 0

x = 14

求解步骤

\frac{x}{2} - \frac{x + 14}{3} + \frac{x + 7}{9} = 0

乘以最小公倍数

9 x - 6 (x + 14) + 2 (x + 7) = 0

展开

9 x - 6 (x + 14) + 2 (x + 7) : 5 x - 70

5 x - 70 = 0

将

70

到右边

5 x = 70

两边除以

5

x = 14

so l v e f or x, 2 x y = 3

so l v e f or x, 2 x y = 5

\frac{x + 4 i}{i} - \frac{x + 4 i}{2 i} + \frac{x}{- 4 i} + \frac{x}{4} = 0

7 - 3 (x - 2) = (7 - x) 4 - 4 x

\frac{2 m - 1}{19} = \frac{m}{10}