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.