Question

7/21-3/18
Даю 54 бала

Answer 1

Ответ:

$\frac{7}{21} -\frac{3}{18} =\frac{7*6}{126} -\frac{3*7}{126} =\frac{42}{126} -\frac{21}{126} =\frac{42-21}{126}=\frac{21}{126} =\frac{1}{6}$