Упростим:
-2 4/13 (13 - k) + 1 1/13 (26 - k) = -2 + 16/13k
При k = 3 1/4
-2 + 16/13 • 3 1/4 = -2 + 16/13 • 13/4 = -2 + 4 = 2
Упростим:
-2 4/13 (13 - k) + 1 1/13 (26 - k) = -2 + 16/13k
При k = 3 1/4
-2 + 16/13 • 3 1/4 = -2 + 16/13 • 13/4 = -2 + 4 = 2