(2x-3)+(3x-5)+(2x+1)+(3x-3)=360

解答

(2 x - 3) + (3 x - 5) + (2 x + 1) + (3 x - 3) = 360

x = 37

求解步骤

(2 x - 3) + (3 x - 5) + (2 x + 1) + (3 x - 3) = 360

去除括号:

(a) = a

2 x - 3 + 3 x - 5 + 2 x + 1 + 3 x - 3 = 360

对同类项分组

2 x + 3 x + 2 x + 3 x - 3 - 5 + 1 - 3 = 360

2 (x - 3) = x + 4

\frac{x + 4}{2} = \frac{2 x - 3}{3}

- 7 x + 6 = 3 (- 2 x + 1)

3 - (2 + x) = x + 3

5 x + 2 = 16 - 2 x