Question

Помогите с примерами пожалуйста

Answer 1

$frac{3}{54} + frac{2}{27} times 2 = frac{3}{54} + frac{4}{54} = frac{7}{54}$
$frac{5}{45} times 2 + frac{3}{90} = frac{10}{90} + frac{3}{90} = frac{13}{90}$
$frac{8}{81} times 8 - frac{5}{72} times 9 = frac{64}{648} - frac{45}{648} = frac{19}{648}$
$frac{7}{8} times 9 - frac{4}{9} times 8 = frac{63}{72} - frac{32}{72} = frac{31}{72}$
$frac{3}{60} - frac{2}{15} times 4 = frac{3}{60} - frac{8}{60} = - frac{5}{60} = - frac{1}{12}$
$frac{3}{49} times 6 + frac{5}{42} times 7 = frac{18}{294} + frac{35}{294} = frac{53}{294}$
$frac{3}{115} times 2 + frac{5}{46} times 5 = frac{6}{230} + frac{25}{230} = frac{31}{230}$
$frac{7}{25} times 7 - frac{3}{35} times 5 = frac{49}{175} - frac{15}{175} = frac{34}{175}$