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15 May, 13:20

The sum of 7 times a number and - 3 is multiplied by 2. This result is 114 greater than the opposite of the number. Find the number.

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  1. A
    15 May, 17:19
    0
    2 (7n-3) = - n+114

    14n-6=-n+114

    15n=120

    n=8

    check ...

    2 (7*8-3) = - 8+114

    2 (56-3) = 106

    2 (53) = 106

    106=106
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