(7 – 6,35) : 6,5 + 9,9
---------------------------------------------------------- =
(1,2 : 36 + 1,2 : 0,25 -1 5/16) : 169/24

большое спасибо

(7 – 6,35) : 6,5 + 9,9---------------------------------------------------------- =(1,2 : 36 + 1,2 : 0,25 -1 5/16) : 169/240,65 : 6,5 + 9,9---------------------------------------------------------- =(12 : 360 + 4,8 -21/16) : 169/240,01 + 9,9---------------------------------------------- =(1 / 30 + 4 8/10 -21/16) : 169/249,91---------------------------------------------- =(1 / 30 + 4 4/5 -21/16) : 169/249,91---------------------------------------------- =(1 / 30 + 24/5 -21/16) : 169/249,91----------------------------------------------------------------- =(8 / 240 + 1152/240 -315/240) : 169/249,91---------------------------------------------- =845/240 : 169/249,91---------------------------------------------- =169/48 : 169/249,91---------------------------------------------- =169/48 * 24/1699,91---------------------------------------------- =1/2 * 1/19,91---------------------------------------------- =1/2 =9,91*2/1=19,82