1. Шаруашылықта тауықтар мен қойлар бар. Олардың 19 басы және 46 аяғы бар болса, олардың әрқайсысының санын тап.
Азрет2002
2
19.05.2020 09:31
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2
х+у=19
2х+4х=46
х=19-у
2 (19-у)+4у=46
38-2у+4у=46
38+2у=46
2у=46-38
2у=8
у=4
х=19-4
х=15
(15;4)
Пошаговое объяснение: