2/5 - у = - 3/7
14/35 - у = - 15/35
у = 14/35 + 15/35
у = 29/35
- - - - - - - - - - - - - -
Проверка: 2/5 - 29/35 = - 3/7
14/35 - 29/35 = - 15/35
- 15/35 = - 15/35 = - 3/7
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Verified answer
2/5 - у = - 3/7
14/35 - у = - 15/35
у = 14/35 + 15/35
у = 29/35
- - - - - - - - - - - - - -
Проверка: 2/5 - 29/35 = - 3/7
14/35 - 29/35 = - 15/35
- 15/35 = - 15/35 = - 3/7