2.1/7: 4.1/6*2 1/3= (6 1/5-4 1/3): 1 1 3= - вопрос №4641440217416213615413113 от EminRoth 13.01.2020 14:38

Question

Математика: 2.1/7: 4.1/6*2 1/3= (6 1/5-4 1/3): 1 1 3=

EminRoth · Answer

1) 2 ( 1/7 ) : 4 ( 1/6 ) * 2 ( 1/3 ) = ( 15/7 ) : ( 25/6 ) * ( 7/3 ) = ( 18/35 ) * ( 7/3 ) = 6/5 = 1 ( 1/5 ) = 1,2
ответ 1,2
2)
А) 6 ( 1/5 ) - 4 ( 1/3 ) = 6 ( 3/15 ) - 4 ( 5/15 ) = 5 ( 18/15 ) - 4 ( 5/15 ) = 1 ( 3/15 ) = 1 ( 1/5 )
Б) 1 ( 1/5 ) : 1 ( 1/3 ) = ( 6/5 ) : ( 4/3 ) = 9/10 = 0,9
ответ 0,9