Решите уравнениея пж) Срончно, Очень *-*

1)8х : 1 1/7 =4 2/3 : 5/12

2) 2,8/х-2 + 4/х

3)3х : 6/7 + 1  1\6: 3 1/3

Плиз) решите.

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