32,4-7,5 * 2 целых и 2/45 : 6 целых и 3/11

32,4 - 7,5• 2 2/45 : 6 3/11 = 31 43/45.

1)) 7,5• 2 2/45 = 75/10 • (45•2+2) / 45 =

{75/10 сокращаем на 5}

15/2• 92/45=

{15 и45 сокращаем на 15; 2 и 92 на 2}

1/1• 46/3 = 46/3;

2)) 46/3 : 6 3/11 = 46/3 : (11•6+3) / 11=

46/3 : 69/11 = 46/3• 11/69=

{46 и 69 сокращаем на 23}

2/3• 11/3 = 22/9

3)) 32,4 - 22/9 = 32 4/10 - 2 4/9=

32 (4•9) / (10•9) - 2 (4•10) / (9•10) =

32 36/90 - 2 40/90=

31 (90•1+36) / 90 - 2 40/90=

31 126/90 - 2 40/90=

31 86/90=

{сокращаем 86/90 на 2}

= 29 43/45.