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olga191
@olga191
December 2021
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1) Сократите: а) 4*5/15*6; б) 12*14/49*15; в) 3*15-3*7/27
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TigerYa
Verified answer
1) Сократите:
а) 4*5/15*6=
{4 и 6 сокращаем на 2; 5 и 15 на 5}
(2•1)/(3•3)= 2/9.
б) 12*14/49*15=
{12 и 15 сокращаем на 3; 14 и 49 на 7}
(4•2)/(7•5)= 8/35.
в) 3*15-3*7/27=
Скобку надо
(3•15 -3•7) все числитель.
(3•15- 3•7)/27=
( 3• (15-7))/27=
Сокращаем 3 и 27 на 3.
(1•(15-7))/9= 8/9.
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Answers & Comments
Verified answer
1) Сократите:а) 4*5/15*6=
{4 и 6 сокращаем на 2; 5 и 15 на 5}
(2•1)/(3•3)= 2/9.
б) 12*14/49*15=
{12 и 15 сокращаем на 3; 14 и 49 на 7}
(4•2)/(7•5)= 8/35.
в) 3*15-3*7/27=
Скобку надо
(3•15 -3•7) все числитель.
(3•15- 3•7)/27=
( 3• (15-7))/27=
Сокращаем 3 и 27 на 3.
(1•(15-7))/9= 8/9.