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8 December, 07:38

If 3x+5=-4 evaluate 2x-5

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  1. 8 December, 07:40
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    solve for x in the first equation:

    3x+5 = - 4

    subtract 5 from each side

    3x = - 9

    divide both sides by 3

    x = - 9 / 3 = - 3

    x=-3

    now solve 2nd equation:

    2x-5=

    2 (-3) - 5 = - 6 - 5 = - 11
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