Question

4/7+3(3/7)×(7/24-5/16)-4/5

Answer 1

$\frac{4}{7} +3\frac{3}{7}*(\frac{7}{24}-\frac{5}{16} )-\frac{4}{5}=\frac{1}{5} \\\\1) \ \frac{7}{24}-\frac{5}{16}=\frac{14}{48} -\frac{15}{48} =-\frac{1}{48} \\\\2) \ 3\frac{3}{7} * (-\frac{1}{48})=\frac{24}{7} *(-\frac{1}{48} )=\frac{1}{7}*(-\frac{1}{2})=-\frac{1}{14} \\\\3) \ \frac{4}{7} +(-\frac{1}{14} )=\frac{8}{14} -\frac{1}{14} =\frac{7}{14} =\frac{1}{2} \\\\4) \frac{1}{2} -\frac{4}{5} =\frac{5}{10} -\frac{8}{10} =-\frac{3}{10}$