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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 10y <500-15y <20y .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        10 * y <500 - 15 * y         (1)
        500 - 15 * y <20 * y         (2)

---

    From inequality(1)：
         y < 20
    From inequality(2)：
         y ＞ 100/7

---

    From inequalities (1) and (2)
         100/7 < y < 20     (3)

---

    The final solution set is :
         100/7 < y < 20

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