First find what fraction of the balls are not white.
(1/4) + (1/8) + (1/12) = 22/48
Therefore the 26 balls are 1 - (22/48) = 26/48 of the total.
Let the total number of balls be n.
\(n\times\frac{26}{48}=26\)
Therefore n = 48.
The number of blue balls is 48/8 = 6 balls.
