Question

( 2 (целых) 8/11 : 16/55 −2 (целых) 5.8 ) ·2,4=
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Answer 1

$2 \frac{8}{11} \div \frac{16}{55} = \frac{30}{11} \times \frac{55}{16} = \frac{75}{8} = 9 \frac{3}{8}$
$9 \frac{3}{8} - 2 \frac{5}{8} = 8 \frac{11}{8} - 2 \frac{5}{8} = 6 \frac{6}{8} = 6 \frac{3}{4}$
$6 \frac{3}{4} \times 2 \frac{4}{10} = \frac{27}{4} \times \frac{24}{10} = \frac{162}{10} = \\ 16 \frac{2}{10}$