Question

aa + bb + cc = abc , hallar: a + b + c

Answer 1

AA+BB+CC=ABC10A+A+10B+B+10C+C=100A+10B+C
11A+11B+11C=100A+10B+C
B+10C=89A
↓      ↓      ↓
9      8      1
A=1
B=9
C=8
ABC=1×9×8=72