c-3.5<= 3

解答

c - 3.5 \leq 3

c \leq 6.5

间隔符号

(- \infty, 6.5]

求解步骤

c - 3.5 \leq 3

将

3.5

到右边

c \leq 6.5

∣ 1 - 4 x ∣ + 8 = 13

36 - 3 x + 4 - x^{2} = 47 - 2 x^{2} + 9 x

\frac{x + 4}{- 2} \leq \frac{3 x - 8}{3}

2 x^{2} - 19 x - 33 = 0

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