Question

помогите пожалуйста ​

Answer 1

$1\frac{13}{14}-( 2-1\frac{11}{35}):\frac{9}{25}+\frac{4}{21}= \frac{27}{14}-( \frac{70}{35} -\frac{46}{35}):\frac{9}{25}+\frac{4}{21}=\frac{27}{14}-\frac{24}{35}*\frac{25}{9}+\frac{4}{21}= \\\\=\frac{27}{14}-\frac{24}{7}*\frac{5}{9}+\frac{4}{21}= \frac{27}{14}-\frac{120}{63}+\frac{4}{21}=\frac{243}{126}-\frac{240}{126}+\frac{24}{126}= \frac{3}{126}+\frac{24}{126} =\frac{27}{126}=\frac{3}{14}$