(3x-2)+(6x-6)+(2x-2)+(x-2)=360

解答

(3 x - 2) + (6 x - 6) + (2 x - 2) + (x - 2) = 360

x = 31

求解步骤

(3 x - 2) + (6 x - 6) + (2 x - 2) + (x - 2) = 360

去除括号:

(a) = a

3 x - 2 + 6 x - 6 + 2 x - 2 + x - 2 = 360

对同类项分组

3 x + 6 x + 2 x + x - 2 - 6 - 2 - 2 = 360

so l v e f or x, 3 x + 9 y - 12 = 0

so l v e f or x, 7 x - 8 y = 4

- 7 x - 2 = - 3 x - 14

- 9 x + 2 = - 7 x + 8

\frac{t + 5}{2} + 5 = \frac{t - 6}{3} + 10