Question

[5 6\7 + 3 5\21] * 2 1\10 =

Answer 1

$(5 \frac{6}{7} + 3 \frac{5}{21}) \times 2 \frac{1}{10} = 8 \frac{18 + 5}{21} \times 2 \frac{1}{10} = 9 \frac{2}{21} \times 2 \frac{1}{10} = \frac{191 \times 21}{21 \times 10} = \frac{191}{10} = 19 \frac{1}{10}$