Overview: 7 questions will be solved this time.Among them
           ☆7 inequalities

[ 1/7Inequality]
    Assignment:Find the solution set of inequality x1+x4+x5+x6+x7 >= 300 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x * 1 + x * 4 + x * 5 + x * 6 + x * 7 >= 300         (1)

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    From inequality(1)：
         x ≥ 13.043478

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    The final solution set is :
         x ≥ 13.043478
[ 2/7Inequality]
    Assignment:Find the solution set of inequality x1+x2+x5+x6+x7 >= 300 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x * 1 + x * 2 + x * 5 + x * 6 + x * 7 >= 300         (1)

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    From inequality(1)：
         x ≥ 100/7

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    The final solution set is :
         x ≥ 100/7
[ 3/7Inequality]
    Assignment:Find the solution set of inequality x1+x2+x3+x6+x7 >= 350 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x * 1 + x * 2 + x * 3 + x * 6 + x * 7 >= 350         (1)

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    From inequality(1)：
         x ≥ 18.421053

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    The final solution set is :
         x ≥ 18.421053
[ 4/7Inequality]
    Assignment:Find the solution set of inequality x1+x2+x3+x4+x7 >= 400 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x * 1 + x * 2 + x * 3 + x * 4 + x * 7 >= 400         (1)

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    From inequality(1)：
         x ≥ 23.529412

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    The final solution set is :
         x ≥ 23.529412
[ 5/7Inequality]
    Assignment:Find the solution set of inequality x1+x2+x3+x4+x5 >= 480 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x * 1 + x * 2 + x * 3 + x * 4 + x * 5 >= 480         (1)

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    From inequality(1)：
         x ≥ 32

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    The final solution set is :
         x ≥ 32
[ 6/7Inequality]
    Assignment:Find the solution set of inequality x2+x3+x4+x5+x6 >= 600 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x * 2 + x * 3 + x * 4 + x * 5 + x * 6 >= 600         (1)

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    From inequality(1)：
         x ≥ 30

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    The final solution set is :
         x ≥ 30
[ 7/7Inequality]
    Assignment:Find the solution set of inequality x3+x4+x5+x6+x7 >= 550 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x * 3 + x * 4 + x * 5 + x * 6 + x * 7 >= 550         (1)

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    From inequality(1)：
         x ≥ 22

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    The final solution set is :
         x ≥ 22

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>>注：本次最多计算 7 道题。

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