Question

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Answer 1

Ответ:

$\displaystyle \frac{2}{3}-\frac{1}{6}=\frac{4-1}{6}=\frac{3}{6}=\frac{1}{2}\\\\\\\frac{4}{5}+\frac{1}{2}=\frac{8+5}{10}=\frac{13}{10}=1\frac{3}{10}\\\\\\\frac{2}{15}+\frac{9}{40}=\frac{16+27}{120}=\frac{43}{120}\\\\\\\frac{7}{16}-\frac{3}{8}=\frac{7-6}{16}=\frac{1}{16}\\\\\\\frac{7}{20}-\frac{7}{32}=\frac{56-35}{160}=\frac{21}{160}\\\\\\\frac{1}{36}+\frac{5}{24}=\frac{2+15}{72}=\frac{17}{72}$