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06-02-2017
Mathematics

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-5(4x+7) {less than to equal to symbol} 25

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06-02-2017

-5(4x+7) <= 25;
-20x - 35 <= 25 / +35;
-20x <= 60 / ÷ (-20 < 0);
x >= - 3;
x ∈ [ - 3, +oo )

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