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bogdanovadas201
@bogdanovadas201
April 2021
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Разнось двух дробей равна на 2/7 меньше их суммы найдите эти дроби если их сумма равна 1/2
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anastasyacwetkova
1/2-2/7=7/14-4/14=3/14
х - 1 дробь
у - 2 дробь
х+у=1/2
х-у=3/14
х=у+3/14
у+3/14+у=1/2
2у=1/2-3/14
2у=7/14-3/14
2у=4/14=2/7
у=2/7 : 2
у=2/7 * 1/2
у=1/7 - 2 дробь
х=1/7+3/14=2/14+3/14=5/14 - 1 дробь
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Answers & Comments
х - 1 дробь
у - 2 дробь
х+у=1/2
х-у=3/14
х=у+3/14
у+3/14+у=1/2
2у=1/2-3/14
2у=7/14-3/14
2у=4/14=2/7
у=2/7 : 2
у=2/7 * 1/2
у=1/7 - 2 дробь
х=1/7+3/14=2/14+3/14=5/14 - 1 дробь