Find the absolute value of the difference of single-digit integers A and B such that
ABA_6 + 411_6 = 1215_6
Express your answer in base 6.
ABA
+ 411
= 1215
we must have A + 1 = 5, so A = 4
Hence
4B4
or 4*62 + B*6 + 4 + 4*62 + 1*6 + 1 = 1*63 + 2*62 + 1*6 + 5
I'll leave you to calculate B from this.