Question

запишите дроби в виде дроби со знаменателем 42:a)1/7 б)5/6 в) 7/11 г)16/21 д)32/84 е)45/210

Answer 1

$displaystyle a)..frac{1}{7}= frac{1*6}{7*6}= frac{6}{42} \ \ b).. frac{5}{6}= frac{5*7}{6*7}= frac{35}{42} \ \ c)..frac{7}{11}= frac{7*42/11}{11*42/11}= frac{294/11}{42}= frac{26+8/11}{42} \ \ d)..frac{16}{21}= frac{16*2}{21*2}= frac{32}{42} \ \ e).. frac{45}{210}= frac{45:5}{210:5}= frac{9}{42}$