3-x=|1+3x|

解答

3 - x = ∣ 1 + 3 x ∣

x = - 2 or x = \frac{1}{2}

十进制

x = - 2, x = 0.5

求解步骤

3 - x = ∣ 1 + 3 x ∣

找到正负区间

x < - \frac{1}{3}, x \geq - \frac{1}{3}

对每个区间解不等式

x = - 2 or x = \frac{1}{2}

x^{2} + 5 x + 0 = 0

x - 1 - \frac{x - 2}{2} + \frac{x - 3}{3} = 0

- 0.7 (w + 5) + 0.02 w = - 3.5

5 x - 7 (x - 1) = - 3 x + 8

f a c t or 12 x^{2} - 31 x + 20