Можно начать со отнимания 6х=25у+1 - 5х-16у=-4 получается х=9у+5 затем можно подставить значение y любое уравнение например 5(9у+5)-16у=-4 далее раскрываем скобки 45у+25-16у=-4 получается 29у=-29 получается у=-1 затем подставляем в любое уравнение вместо y -1 -5х+16=-4 далее -5х=-20 х= 4 минусы сократились
Спасибо
Ответ дал: Гость
my family consists of three people. i'm mom and dad. i was nineteen, i work in a hospitalspetsalistom hr. my mother thirty-seven years. she has her own shop, it privateperdprinematel. my father for forty years. he works for an oil company. we love to spend timetogether often. our family is very friendly, we help each other in everything "
Ответ дал: Гость
1. usually boys place chairs to a lesson of english language. 2. at you the interesting cultural program. 3. we can invite group of pupils (students) of 11 persons to a lesson of drama art. 4. you will remain after mathematics? 5. boys from our school have agreed will meet at 2 o'clock in the afternoon.
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