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22 July, 06:18

12h - 3 > 15h or 5 > - 0.2h + 10

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  1. 22 July, 06:42
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    Given composite inequality : 12h - 3 > 15h or 5 > - 0.2h + 10.

    Let us solve them one by one.

    12h - 3 > 15h

    Subtracting 12h from both sides, we get

    12h-12h - 3 > 15h - 12h

    -3 > 3h

    Dividing both sides by 3, we get

    -3/3 > 3h/3

    -1 > h.

    Solving 5 > - 0.2h + 10.

    Adding - 0.2h on both sides, we get

    5 + 0.2h > - 0.2h+0.2h + 10.

    5 + 0.2h > 10.

    Subtracting 5 from both sides, we get

    5-5 + 0.2h > 10-5.

    0.2h > 5

    Dividing both sides by 0.2, we get

    0.2h/0.2 > 5/0.2

    h > 25.

    Therefore - 1>h or h>25.
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