(151/2-23/8)-(55/6 63/4) (102/3-55/8)

[Sage]

Нужна помощь с решением задачи 5 класса: - (151/2-23/8)-(55/6 63/4) (102/3-55/8)

 

[Вундеркинд]

(15(1/2) - 2(3/8)) - (5(5/6)+ 6(3/4)) +(10(2/3)-5(5/8)). 15(1/2) – 2(3/8) = 31/2 – 27/8 = 124/8 – 19/8 = 105/8. 5(5/6) + 6(3/4) = 36/6 – 27/4 = 70/12 + 81/12 = 151/12. 10(2/3) - 5(5/8) = 32/3 – 45/8 = 356/24 – 135/24 = 121/24. 105/8 – 151/12 = 315/24 – 302/24 = 13/24. 13/24 + 121/24 = 134/24 = 5(7/12).