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22 December, 13:38

3 (2d - 7) = (2 + 4d) 2

i need the steps

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  1. 22 December, 17:17
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    3 (2d - 7) = (2 + 4d) 2

    distribute

    3*2d - 3*7 = 2*2 + 2*4d

    multiply

    6d - 21 = 4 + 8d

    subtract 6d from each side

    6d-6d-21 = 4 + 8d-6d

    -21 = 4+2d

    subtract 4 from each side

    -21 - 4 = 4+2d-4

    -25 = 2d

    divide by 2

    -25/2 = d
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