3.3(n-8)-n=1.2

解答

3.3 (n - 8) - n = 1.2

n = 12

求解步骤

3.3 (n - 8) - n = 1.2

在两边乘以

10

33 (n - 8) - 10 n = 12

展开

33 (n - 8) - 10 n : 23 n - 264

23 n - 264 = 12

将

264

到右边

23 n = 276

两边除以

23

n = 12

- \frac{1}{6} v = - 2 - \frac{2}{3} v + \frac{4}{3} v

\frac{3}{10} p = \frac{1}{2} + \frac{2}{5} p + 1 \frac{1}{10}

so l v e f or m, - 2 m - 5 n = 7 m - 3 n

- 2 y - 3 - {- 4 y + 5 + [- y + 2 - (3 y - 1) + 2 y - 5]} = - (y - 4)

- (3 x + 8 - (- 15 + 6 x - (- 3 x + 2) - (5 x + 4)) - 29) = - 5