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21 November, 12:45

If 8 is added to twice a number and this sum is multiplied by 5 , the result is the same as if the number is multiplied by negative - 28 and 2 is added to the product. what is the number?

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  1. 21 November, 16:23
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    (8+2x) - > If 8 is added to twice a number (x)

    5 * (8+2x) - > and this sum is multiplied by 5

    5 * (8+2x) = x * (-28) + 2 - > the result is the same as if the number is multiplied by negative - 28 and 2 is added to the product.

    Simplifying the equations on both sides would give

    40+10x=-28x+2 transpose - 28 to the left side and 40 to the right side

    28x+10x=2-40

    38x=-38

    x=-1
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