Решите уравнение 22×(17/26х-3/4)=5 1/13 ответ - вопрос №221726345113155456992 от nastyonakononenkova 24.08.2020 20:41

Question

Математика: Решите уравнение 22×(17/26х-3/4)=5 1/13 ответ д/б 1,5

nastyonakononenkova · Answer

22 * (17/26х - 3/4) = 5 1/1317/26х - 3/4 = 5 1/13 : 22 = 66/13 * 1/22 = (3*1)/(13*1) = 3/1317/26х = 3/13 + 3/4 = 12/52 + 39/52 = 51/52х = 51/52 : 17/26 = 51/52 * 26/17 = (3*1)/(2*1) = 3/2х = 1 1/2 = 1,5Пояснения:5 1/13 = (5*13+1)/13 = 66/133/2 = 1 1/2 = 1,5...