Решите пж пж...........

Question

Решите пж пж...........

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Answer 1

1)
2/3+4/11=34/33=1 1/33
3х/5-2у/7=21х/35-10у/35=21х-10y/35
2)
1/x+2+4/x^2-4=1/x+2+4/(x-2)(x+2)=1+4/(x+2)(x-2)=5/(x-2)(x+2)