Question

1 phần 3 chia 6 phần 7 cộng 3 phần 4 chia 6 phần 7

 

Answer 1

\(\frac{1}{3}:\frac{6}{7}+\frac{3}{4}:\frac{6}{7}=\frac{1}{3}.\frac{7}{6}+\frac{3}{4}.\frac{7}{6}=\frac{7}{6}.\left(\frac{1}{3}+\frac{3}{4}\right)=\frac{7}{6}.\frac{13}{12}=\frac{91}{72}\)

Answer 2

1/3:6/7+3/4:6/7=(1/3+3/4):6/7=13/12:6/7=13/12x7/6=51/72