Найдите значения выражения: (3 3/5-2 1/15)*5= - вопрос №324907533521155114171134348317 от ника2552 24.08.2020 10:26

Question

Математика: Найдите значения выражения: (3 3/5-2 1/15)*5= (1 14/17-1 1/34)*34= 8 3/17*5 1/4 + 3 14/17*5=

ника2552 · Answer

(3 3/5 - 2 1/15) * 5= 7 2/31) 3 3/5 - 2 1/15 = 18/5 - 31/15 = (18*3 - 31*1)/15 = (54 - 31)/15 = 23/15 = 1 8/152) 1 8/15 * 5 = 23/15 * 5 = 23/3 = 7 2/3(1 14/17-1 1/34)*34= 271)1 14/17 - 1 1/34 = 31/17 - 35/34 =(31*2 - 35*1)/34 = (62 - 35)/34 = 27/342)27/34 * 34 = 278 3/17 * 5 1/4 + 3 14/17 * 5 = 62 3/688 3/17 * 5 1/4 + 3 14/17 * 5 = 139/17 * 21/4 + 65/17 * 5 = 2919/68 + 65/17 * 5 = 2919/68 + 325/17 =  (2919*1 + 325*4)/68 = (2919 + 1300)/68 = 4219/68 = 62 3/68...