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Algebra Level 2

123456789 987654321 = x 123456789-987654321=-x

Find the sum of the digits of x x


The answer is 45.

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1 solution

Andrea Mitta
Mar 30, 2016

123456789 - 987654321 = - x can be seen as x = 987654321 - 123456789 which result is 864197532. At this point you can sum all the digits of this number so as to find the solution.

no not correct

Ärìjít Sãmãñtå - 5 years, 1 month ago

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