Question

4 2/5 - 3 3/4 =8 7/15 - 8 7/60

Answer 1

Ответ:

Если нужно проверить равенство, то вот:

4 2/5 - 3 3/4 =8 7/15 - 8 7/60

$4\frac{2}{5}-3\frac{3}{4}=8\frac{7}{15}-8\frac{7}{60} ;\\\\\frac{5*4+2}{5}-\frac{4*3+3}{4}=\frac{15*8+7}{15}-\frac{60*8+7}{60} ; \\\\\frac{22}{5}-\frac{15}{4}=\frac{127}{15}-\frac{487}{60} ; \\\\\frac{22*4}{20}-\frac{15*5}{20}=\frac{127*4}{60}-\frac{487}{60} ; \\\\\frac{88}{20}-\frac{75}{20}=\frac{508}{15}-\frac{487}{60} ;\\\\\frac{13}{20} = \frac{21}{60} ;$

$\frac{13}{20} = \frac{7}{20}$      -     неверно     --->      $\frac{13}{20} \neq \frac{7}{20}$.