Question

(1 6/7-1.6): 1/70 решить по действиям,.

Answer 1

$(1 \frac{6}{7} - 1.6) \div \frac{1}{70} =$
$=( \frac{13}{7} - \frac{16}{10} ) \div \frac{1}{70} =$
$=( \frac{13}{7} - \frac{8}{5} ) \div \frac{1}{70 } =$
$=( \frac{65}{35} - \frac{56}{35} ) \div \frac{1}{70}$$=\frac{9}{35} \div \frac{1}{70} =$
$=\frac{9}{35} \times \frac{70}{1}$$=\frac{9}{1} \times \frac{2}{1}$$=\frac{18}{1} = 18$