−12 целых 1/24 + (−2 целых 1/15)
-12 1/24 +(-2 1/15) = -12 5/120 - 2 8/120 = -14 13/120
-12 1/24+(-2 1/15)=-12 1/24-2 1/15=-12 5/120-2 8/120=-14 13/120