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arinamalysh16
@arinamalysh16
July 2022
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решите:
3а-5(4а-3в)+2(3в-а-1)
при а=2/19; в=3/7
пожалуйста, очень нужно
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seraya12
Verified answer
3a-5(4a-3b)+2(3b-a-1)
Раскрываем скобки
3а-20а+15b+6b-2a-2=-19a+21b-2=-2+9-2=5
Ответ: 5
1 votes
Thanks 2
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Answers & Comments
Verified answer
3a-5(4a-3b)+2(3b-a-1)Раскрываем скобки
3а-20а+15b+6b-2a-2=-19a+21b-2=-2+9-2=5
Ответ: 5