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25 February, 08:22

Insert one set of parentheses to make the equation true:

2n - 3 + 4n + 6n + 1 = 30n + 1

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  1. 25 February, 08:31
    0
    Add like terms: 2n+4n+6n = 12n - 2 = 30 n+1

    +2 = + 2

    -12n = - 12n + 3

    so 3 = - 12n

    divide by a - 12

    3/-12 = - 1/4
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