Question

1) 1/4 * 4
2) 5/11 * 3
3) 7 * 5/21

Answer 1

Ответ:

$\frac{1}{4} *4=\frac{4}{4}=1;\\\\\frac{5}{11} *3=\frac{15}{11}=1\frac{4}{11};\\\\7*\frac{5}{21}=\frac{35}{21}=1\frac{14}{21}=1\frac{2}{3}.$