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10 November, 18:22

When - 3 is multiplied by the sum of a number and 8, the result is - 21. Find the number.

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  1. 10 November, 18:43
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    Let's take the number as a

    -3 (a + 8) = - 21

    a + 8 = (-21 / - 3)

    a + 8 = 7

    a = - 1

    that number is - 1
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