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12 - 9 = 15d + 9? please help with operations

  • Math -

    Please do not keep posting the same problem over and over. You try to do this one, and I'll check your work in an hour.

  • Math -

    12-9=15d+9

    3=15d+9

    3-9=15d

    -6=15d

    15d= -6

    3*5*d= -3*2 Divide with 3

    5d= -2 Divide with 5

    d= -2/5= -0.4

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