Question

(3 1/4+2 1/6):2 3/5•2/3:4/9=

Answer 1

Ответ:   3,125.

Объяснение:

(3 1/4+2 1/6) : 2 3/5•2/3:4/9= 3,125.

1)  3 1/4+2 1/6 => НОК(4;6) = 12 => 3 3/12+2 2/12  = 5 5/12;

2)  5 5/12:2 3/5 = (5*12+5)/12:(2*5+3)/5=65/12 : 13/5=65/12*5/13 = 25/12;

3)  25/12*2/3 = 25/18;

4)  25/18:4/9 = 25/18*9/4 = 25/8 = 3,125.