A+B=91 C+B=78 A+C=65 A B C

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A+B=91C+B=78A+C=65ABCA+B=91C+B=78A+C=65ABCA+B=91C+B=78A+C=65ABCc=(91+78+65)%2-91=26a=(91+78+65)%2-91

A+B=91 C+B=78 A+C=65 A B C
A+B=91 C+B=78 A+C=65 A B C

A+B=91 C+B=78 A+C=65 A B C
c=(91+78+65)%2-91=26
a=(91+78+65)%2-91=39
b==(91+78+65)%2-91=65

A=39,B=52,C=26

39 52 26

A=39
B=52
C=26

(A+B)-(A+C)=B-C=26
C+B=78即：B=52,C=26,A=39

A=39 B=52 C=26