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Daria0987654
@Daria0987654
July 2022
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Найди значение выражения b\2c+2b\c, если b=− 108 −0,79, а c=15,6 −17,6.
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TigerYa
Verified answer
Найди значение выражения
b\2c+2b\c, если b=− 108 −0,79, а c=15,6 −17,6.
b\2c+2b\c= b/2c+ (2b•2)/c•2=
(b+4b)/2c=5b/2c.
b=-108; c=15,6.
5b/2c= (5•(-108))/(2•15,6)=
(-540)/31,2= -540: 312/10=
-540• 10/312=
Сокращаем 540 и 312 на 4;
-135•10/78=
Сокращаем 10/78 на 2;
-135•5/39= -675/39= -17 12/39.
b= -0,79; c= -17,6.
5b/2c= (5•(-0,79))/(2•(-17,6))=
3,95/35,2= 395/100 / 352/10=
395/100• 10/352=
Сокращаем 100 и 10 на 1;
395/10• 1/352=
Сокращаем 395/10 на 5
79/2• /352= 79/704.
13 votes
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Answers & Comments
Verified answer
Найди значение выражения
b\2c+2b\c, если b=− 108 −0,79, а c=15,6 −17,6.
b\2c+2b\c= b/2c+ (2b•2)/c•2=
(b+4b)/2c=5b/2c.
b=-108; c=15,6.
5b/2c= (5•(-108))/(2•15,6)=
(-540)/31,2= -540: 312/10=
-540• 10/312=
Сокращаем 540 и 312 на 4;
-135•10/78=
Сокращаем 10/78 на 2;
-135•5/39= -675/39= -17 12/39.
b= -0,79; c= -17,6.
5b/2c= (5•(-0,79))/(2•(-17,6))=
3,95/35,2= 395/100 / 352/10=
395/100• 10/352=
Сокращаем 100 и 10 на 1;
395/10• 1/352=
Сокращаем 395/10 на 5
79/2• /352= 79/704.