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6 January, 07:03

The sum of 5 times a number and 4 is - 9

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  1. 6 January, 09:00
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    The sum of 5 (x) + 4 = (-9)

    We have to isolate the x so we subtract 4.

    5 (x) + 4 = (-9)

    5 (x) - 4 = - 4

    5 (x) = ( - 13)

    Now we have to continue to isolate the x.

    So now we have to divide by 5.

    5 (x) / 5 = (-13) / 5

    and that's x = (-2.6)
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