Question

Найдите значение выражения ((79 : 4772): 1,25

Answer 1

((79 : 4772): 1,25 =224/235

 

 

 7          47             7            72

---   :  ---------  =  ------  *  --------  =  сокращаем 72:9=8  и  9:9=1

 9          72             9            47

 

         7                8                56

=  --------  *  -----------  = -----------

        1                 47              47

                  125

1,25 =  -----------

                  100

 

  56           125           56              100           5600

-------  : ---------- = ----------  *  ---------- = ---------------   =
47            100           47              125           5875

                                            224

сокращаем на 25  =  -----------

                                            235

Answer 2

 (79 : 4772): 1,25=(7/9*72/49):1,25=8/7:1 целую 25/100=   8/7  : 125/100 = 8/7*100/125 = 200/31,25=6,4