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1 2/7:5 1/7=2/3 : х

[tex]1 \frac{2}{7} \div 5 \frac{1}{7} = \frac{2}{3} \div x \\ \frac{1 \frac{2}{7} }{5 \frac{1}{7} } = \frac{ \frac{2}{3} }{x} \\ \frac{ \frac{9}{7} }{ \frac{36}{7} } = \frac{2}{3x} \\ \frac{9}{36} = \frac{2}{3x} = \frac{1}{4} = \frac{2}{3x} \\ 1 \times 3x = 4 \times 2 \\ 3x = 8 \\ x = \frac{8}{3} \\ x = 2 \frac{2}{3} [/tex]