Решить уравнение (13/21 x+5.2) ÷ 1 5/21=8.1 - вопрос №1321521521817533270 от nAsTyAsUpErYeS 09.09.2020 03:31

Question

Математика: Решить уравнение (13/21 x+5.2) ÷ 1 5/21=8.1

nAsTyAsUpErYeS · Answer

(13/21 х + 5,2) : 1 5/21 = 8,113/21 х + 26/5 = 81/10 * 26/2113/21 х + 26/5 = 1053/10513/21 х = 1053/105 - 26/5 13/21 х = 101/21х = 101/21 : 13/21 = 101/21 * 21/13 = 101/13 = 7 10/13...