Ответы на вопрос:
ответ:
пошаговое объяснение:
преобразуем
х²+х-х-1-х²+3х=0
3х-1=0
3х=1
х=1/3
проверка
1/9+1/3-1/3-1-1/9+3*1/3=0
-1+1=0
0=0
this is a very easy task, you'd better solve it yourself, believe me, it's very easy, but please do not throw a complaint at me, because I'm only in the 7th grade and I also need to ask questions.
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