# Maths

subtract 243 base 5 from 243 base 6?

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1. I would change both to base 10, then do the arithmetic.
2435 = 2(5^2) + 4(5) + 3 = 73
2436 = 2(6^2) + 4(6) + 3 = 99

now do the subtraction
You don't say what base the answer is to be.

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posted by Reiny

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