Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 480 ≤600-4X ≤520 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        480 ≤600 - 4 * x         (1)
        600 - 4 * x ≤520         (2)

---

    From inequality(1)：
         x ≤ 30
    From inequality(2)：
         x ≥ 20

---

    From inequalities (1) and (2)
         20 ≤ x ≤ 30    (3)

---

    The final solution set is :
         20 ≤ x ≤ 30

Your problem has not been solved here? Please take a look at the  hot problems ！