Overview: 4 questions will be solved this time.Among them
           ☆4 inequalities

[ 1/4Inequality]
    Assignment:Find the solution set of inequality -3 <= (2x-1)/3 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -3 <= ( 2 * x - 1 ) / 3         (1)

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    From inequality(1)：
         x ≥ -4

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    The final solution set is :
         x ≥ -4
[ 2/4Inequality]
    Assignment:Find the solution set of inequality (2x-1)/3 <7 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 2 * x - 1 ) / 3 <7         (1)

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    From inequality(1)：
         x < 11

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    The final solution set is :
         x < 11
[ 3/4Inequality]
    Assignment:Find the solution set of inequality -1 <= 3(1+3x)/5 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -1 <= 3 * ( 1 + 3 * x ) / 5         (1)

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    From inequality(1)：
         x ≥ -8/9

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    The final solution set is :
         x ≥ -8/9
[ 4/4Inequality]
    Assignment:Find the solution set of inequality 3(1+3x)/5 <= 6 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        3 * ( 1 + 3 * x ) / 5 <= 6         (1)

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    From inequality(1)：
         x ≤ 3

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    The final solution set is :
         x ≤ 3

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