если x = - 1 1/26, y = 1 4/9, то:
-1,25 * (-1 1/26) * 8 * 1 4/9 =
= 5/4 * 27/26 * 8 * 13/9 =
= 3 * 5 = 15
если x = - 1 1/26, y = 1 4/9, то:
-1,25 * (-1 1/26) * 8 * 1 4/9 =
= 5/4 * 27/26 * 8 * 13/9 =
= 3 * 5 = 15