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OpeXRaX
@OpeXRaX
November 2021
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а) 1/2 * 1 1/3 б) 1 1/9 * 3 в)1 1/9 * 2 2/5
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TigerYa
Verified answer
а)) 1/2• 1 1/3= 1/2• (1•3+1)/3=
1/2• 4/3= 1/1• 2/3= 2/3
{2 и 4 сократили, значит поделили на 2}
б) 1 1/9 • 3 = (1•9+1)/9 • 3/1=
10/9• 3/1= 10/3• 1/1= 10/3= 3 1/3
{сократили 9 и 3 на 3}
в)1 1/9 • 2 2/5=(1•9+1)/9 • (2•5+2)/5=
10/9• 12/5= 2/3• 4/1= 8/3= 2 2/3
{сократили 10 и 5 на 5; 9 и 12 на 3}
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Answers & Comments
Verified answer
а)) 1/2• 1 1/3= 1/2• (1•3+1)/3=
1/2• 4/3= 1/1• 2/3= 2/3
{2 и 4 сократили, значит поделили на 2}
б) 1 1/9 • 3 = (1•9+1)/9 • 3/1=
10/9• 3/1= 10/3• 1/1= 10/3= 3 1/3
{сократили 9 и 3 на 3}
в)1 1/9 • 2 2/5=(1•9+1)/9 • (2•5+2)/5=
10/9• 12/5= 2/3• 4/1= 8/3= 2 2/3
{сократили 10 и 5 на 5; 9 и 12 на 3}