college math

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Base Twelve.

B08twelve + ? = 9twelve

  • college math -

    So is your question using base twelve, 08+?=9

    or is it
    Base eight, 12 + ?= what in base 12?

    I have no idea what your question is

  • college math -

    Are you supposed to work your arithmetic within the base 12 ?
    If so, then you should have an addition table, which you can use also for subtraction

    Other option:
    switch the numbers to base 10, do the arithmetic, then switch back.
    B08twelve + ? = 9twelve
    (11(12^2) + 0(12) + 8) + ? = 9
    1592 + ? = 9
    the missing number is -1583
    which in base 12 = -AB1

    to work within the base
    B08
    - 9 I will have to borrow, all the way from the B
    -----
    AB1

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