24*(1 31/63+1/24-(2 5/21+31/252)): 12/35 ! - вопрос №260167424131631242521312521235 от zhenya2902 15.12.2020 13:38

Question

Математика: 24*(1 31/63+1/24-(2 5/21+31/252)): 12/35 !

zhenya2902 · Answer

24*(1 31/63+1/24-(2 5/21+31/252)):12/35=-57 11/12
1) 2 5/21+31/252=2 60/252+31/252=2 91/252=2 13/36
2) 1 31/63+1/24=1 248/504+21/504=1 269/504
3) 1 269/504-2 13/36=1 269/504-2 182/504=1 269/504-1 686/504=-417/504=-1 139/168
4) 24*(-417/504)=-417/21=-19 18/21=-19 6/7
5) -19 6/7:12/35=-695/12=-57 11/12