53 7/9 * 3 15/22 - 8,2 * (-25/82) + 4 17/38 * (-4 5/13) Заранее спасибо. Created by arinawolt55. matematika-ru

13) Заранее спасибо...

arinawolt55 @arinawolt55

July 2022 1 2 Report

53 7/9 * 3 15/22 - 8,2 * (-25/82) + 4 17/38 * (-4 5/13)
Заранее спасибо

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TigerYa

Verified answer

53 7/9 * 3 15/22 - 8,2 * (-25/82) +
4 17/38 * (-4 5/13)= - 19 4/9.

1)) 53 7/9• 3 15/22=
(53•9+7)/9• (3•22+15)/22=
484/9• 81/22=
сокращаем 9 и 81 на 9; 484 и 22 на 22.
22/1• 9/1= 22/9= 2 4/9.

2)) 8,2• (-25/82)= 82/10• (-25/82)=
Сокращаем 82 и 82 на 82; 10 и 25 на 5;
1/2• (-5/1)= (-5/2 )= (-2 1/2)

3)) 4 17/38• (-4 5/13)=
(4•38+17)/38• (- 4•13+5)/13=
169/38• (-57/13)=
Сокращаем169 и 13 на 13; 38 и 57 на 19.
13/2• (-3/1)= (-39/2) = (-19 1/2)

4)) 2 4/9- (-2 1/2)+ (- 19 1/2) =
2 4/9+ 2 1/2- 19 1/2=
-( 2 4/9- 2 1/2 + 19 1/2)=
-(2 4/9 + 17)= -19 4/9.

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srochnooooo zaranee spasibo 11

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arinawolt55 September 2021 | 0 Ответы

pozhalujsta srochno nadoe7aa57bb46570e700f2293edb27b23c5 12796

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Answers & Comments

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srochnooooo zaranee spasibo 11

pozhalujsta srochno nadoe7aa57bb46570e700f2293edb27b23c5 12796

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