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Ответ:

 frac{18}{30}  - x =  frac{4}{30}  +  frac{6}{30}

х= 10/30

Х= 18/30-10/30

х=8/30

x =  frac{8}{30}

 frac{10}{15}  + ( frac{5}{15}  - x) =  frac{14}{15}

х=14/15-10/15

х= 4/15

х= 5/15-4/15

х=1/15

x =  frac{1}{15}

 frac{34}{60}  +  frac{8}{60}  + y =  frac{41}{60}  +  frac{16}{60}

у=41/60+16/60

y=57/60

y=57/60-(34/60+8/60)

y=57/60-42/60

y =  frac{15}{60}

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