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gulsumd
@gulsumd
August 2022
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32,4-7,5 *2 целых и 2/45 :6 целых и 3/11
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TigerYa
Verified answer
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.
2 votes
Thanks 1
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Answers & Comments
Verified answer
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.