Question

приведите дробь 1/4 кчислителю 3;5;7;9;10;13; приведите дробь 4/10 к знаменателю 5;20;40;15;25;

Answer 1

1)
$frac{1}{4} = frac{1*3}{4*3} = frac{3}{12} \ \ frac{1}{4} = frac{1*5}{4*5} = frac{5}{2} \ \ frac{1}{4} = frac{1*7}{4*7} = frac{7}{28} \ \ frac{1}{4} = frac{1*9}{4*9} = frac{9}{36} \ \ frac{1}{4} = frac{1*10}{4*10} = frac{10}{40} \ \ frac{1}{4} = frac{1*13}{4*13} = frac{13}{52}$

2)
$frac{4}{10} = frac{4:2}{10:2} = frac{2}{5} \ \ frac{4}{10} = frac{4*2}{10*2} = frac{8}{20} \ \ frac{4}{10} = frac{4*4}{10*4} = frac{16}{40} \ \ frac{4}{10} = frac{2}{5} = frac{2*3}{5*3} = frac{6}{15} \ \ frac{4}{10} = frac{2}{5} = frac{2*5}{5*5} = frac{10}{25}$