The product of a number and 8 less than the number is –15. Find the number. and plz explain

Question

The product of a number and 8 less than the number is –15. Find the number. and plz explain

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Skylar 3 weeks 2021-11-07T08:24:16+00:00 1 Answer 0 views 0

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    2021-11-07T08:25:18+00:00

    Answer:

    It can be 5 or  3

    Step-by-step explanation:

    let x = that number

    x * (x – 8) = -15

    xx  – 8x + 15 = 0

    xx –  3x  – 5x + 15 = 0

    x(x – 3) – 5(x – 3) = 0

    (x – 5)(x – 3) = 0

    then x = 5 or  x = 3

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45:7+7-4:2-5:5*4+35:2 =? ( )