Найдите значение выражения: Дробь: x-3y/2x-9y Если 3x + y/x-2y = 4 Варианты: а) - №11859323

Найдите значение выражения:
Дробь: x-3y/2x-9y
Если 3x + y/x-2y = 4
Варианты:
а) 1/2
б)2/3
в)1,5
г)2
Прошу написать решение подробно
- Предмет:
  Алгебра
- Автор:
  herrero
- 6 лет назад

Ответы 1

(3x+y)/(x-2y)=43x+y=4x-8y4x-3x=y+8yx=9y(x-3y)/(2x-9y)=(9y-3y)/(18y-9y)=6y/9y=2/3
- Автор:
  lily8s2a
- 6 лет назад
- 0
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