Question

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Answer 1

3/7 : x = 5 : 2 2/11

3/7x = 5 : 24/11

3/7x = 5 * 11/24

3*24 = 55*7x

x = 72/385

Answer 2

Пошаговое объяснение:

$\tt\displaystyle \frac{3}{7}:x=5:2\frac{2}{11}\\\\\frac{3}{7}*\frac{1}{x}=5:\frac{24}{11}\\\\\frac{3}{7x}=5*\frac{11}{24}\\\\\frac{3}{7x}=\frac{55}{24}\\\\7x*55=3*24\\7x*55=72\\7x=72:55\\\\7x=\frac{72}{55}\\\\x=\frac{72}{55}:7\\\\x=\frac{72}{55}*\frac{1}{7}=\frac{72}{385}$