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Vantsyan0
@Vantsyan0
August 2022
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Упрости выражение 2(0,8x+y)−5(2x−y) и определи его значение, если x=5 и y=4.
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Pikuska
Verified answer
2(0,8х+у)-5(2х-у)=1,6х+2у-10х+5у=7у-8,4х=7*4-8,4*5=28-42=-14
3 votes
Thanks 1
Kovalenkonatala83
я щитаю что будет вот так:
Kovalenkonatala83
хотя может и так
dianaaa007
2(0,8х+у)-5(2х-у)
1,6х+2у-10х+5у
-8,4х+7у=0
-8,4*5+7*4=0
-42+28=0
Ответ:-14
1 votes
Thanks 0
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Answers & Comments
Verified answer
2(0,8х+у)-5(2х-у)=1,6х+2у-10х+5у=7у-8,4х=7*4-8,4*5=28-42=-141,6х+2у-10х+5у
-8,4х+7у=0
-8,4*5+7*4=0
-42+28=0
Ответ:-14