22. 解不等式-5 x+4 ≥ 14 ≥ 3 x-1可以得到x的範圍為何?(A)-2 ≤ x ≤ 5 (B) 2 ≤ x ≤ 5 (C)x ≤ -2 (D)x ≤ 5
【鯖魚270號】評論
拆成兩個算式看:①-5x+4 ≧ 14 → -5☆ ...