1 1/5:1/5 2 1/2:1 2/3 1 1/5*1/6 1 12* 1 13 решите

$1 \frac{1}{5} \div \frac{1}{5} = \frac{6}{5} \times 5 = 6 \\ \\ 2 \frac{1}{2} \div 1 \frac{2}{3} = \frac{5}{2} \div \frac{5}{3} = \frac{5 \times 3}{2 \times 5} = \frac{3}{2} = 1 \frac{1}{2} = 1.5 \\ \\$

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$1 \frac{1}{5} \times \frac{1}{6} = \frac{6 \times 1}{5 \times 6} = \frac{1}{5} \\ \\ 1 \frac{1}{2} \times 1 \frac{1}{3} = \frac{3 \times 4}{2 \times 3} = \frac{4}{2} = 2$