math 1A

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hey im having trouble with these math problem .
if a=2 and d=7
6d-3a =?
how do you solve and get the answer ?

  • math 1A -

    6d-3a =?

    6(7) - 3(2) =

    42 - 6 = 36

  • math 1A -

    ln(a+b) + ln(a-b) -2ln c

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