Решите задачу пожалуйста пожалуйста 20-18,6:(6/ 11-4/3)=? .................... 15. 20
20 - 18,6 : (6/11 - 4/3) = = 20 -18,6 : (6*3/33 - 4*11/33) = = 20 -18,6 : ( (18 - 44)/33 ) = = 20 - 18 3/5 : (-26/33) = = 20 - (18*3)/5 : (-26/33) = = 20 + (54*33)/(26*3) = = 20 + (27*11)/(13) = = 20 + 297/13 = = 20 + 22 11/13 = = 42 11/13