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22-06-2016
Mathematics

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Negative four times a number plus 7 is no more than the number minus 25

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fanluxion fanluxion

22-06-2016

-4×x+7 ≤ x-25
-4x+7≤x-25
-7 -7
-4x≤-32
÷-4 ÷-4
x≤8

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