Автор - alisstar1303

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Ответ

Автор - oksik1970

sqrt{0.81  times 625}  -  sqrt{2 frac{1}{4} }  = 0.9  times  25 -  sqrt{ frac{9}{4} }  =  frac{9 times 25}{10}  -  frac{3}{2}  =  frac{45}{2}  -  frac{3}{2}  =  frac{42}{2}  = 21
 sqrt{0.49 times 225}  -  sqrt{1 frac{11}{25} }  = 0.7 times 15 -  sqrt{ frac{36}{25} }  =  frac{7 times 15}{10}  -  frac{6}{5}  =  frac{21}{2}  -  frac{6}{5}  = 10.5 -  1.2 = 9.3
 sqrt{2 frac{14}{121}  times  frac{4}{25} }  -  sqrt{1}  =  sqrt{ frac{256}{121} }  times  frac{2}{5}  - 1 =  frac{16 times 2}{11 times 5}  - 1 =  frac{32}{55}  - 1 =  -  frac{23}{55}
 sqrt{ frac{147}{48} }  =  sqrt{ frac{49}{16} }  =  frac{7}{4}  = 1 frac{3}{4}

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