79. There are three piles of stones, A, B, and C. After taking 8 stones from pile A and placing them in pile B, the number of stones in piles A and B becomes the same. Then, taking 6 stones from pile B and placing them in pile C, the number of stones in piles B and C becomes the same. Next, taking 2 stones from pile C and placing them in pile A, the number of stones in pile A is exactly twice that in pile C. Originally, pile A had $\qquad$ stones.
Answer: 26