(47 х 1/26) х 13/27 -( 20 х 1/26) х 13/27 - вопрос №5216725471261327201261327 от lavrovaa0 05.05.2020 16:18

Question

Математика: (47 х 1/26) х 13/27 -( 20 х 1/26) х 13/27

lavrovaa0 · Answer

1)47 * 1/26 = 47/1*1/26 = 47/26 = 1 21/26
2) 20*1/26 = 20/1*1/26 = 20/26 = 10/13
3)1 1/26 * 13/27 = 47/26 * 13/27 = 611/702 =47/54
4)10/13 * 13/27 =130/351 = 10/27
5)47/54 - 10/27 =(47* 1 - 10 * 2)/54 = 47/54 - 20/54 = 27/54 = 1/2
ответ: 1/2