Предмет: Алгебра, автор: kapsha50

Решите пожалуйсто, не кратко, умоляю!!!!

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Автор ответа: m11m

!!!!!!!!!!!!!!!!!!!!!!!

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Автор ответа: lena25073

пусть вес яблока х гр, а вес груши у. получим систему уравнений
3х+2у=1200
2х+3у=1300

домножим первое на 2, второе на -3
6х+4у=2400
-6х-9у=-3900

сложим
-5у=-1500
у=-1500:(-5)
у=300 гр вес груши

3х+2*300=1200
3х=1200-600
3х=600
х=600:3
х=200 гр вес яблока

Проверка:
3*200+2*300=600+600=1200
2*200+3*300=400+900=1300

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AT THE PUB
Pubs (short for public houses) are an important part of British life. They are as a rule quiet, rather private places, large or small, new or old, in cities or in the countryside, with a friendly atmosphere where local people meet in the evening for company and conversation.
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