\(\left(\frac{1}{4}+\frac{3}{8}\right)\times\frac{8}{7}\)
\(=\frac{5}{8}\times\frac{8}{7}\)
\(=\frac{5}{7}\)
#H
\(\left(\frac{1}{4}+\frac{3}{8}\right)\cdot\frac{8}{7}=\frac{5}{8}\cdot\frac{8}{7}=\frac{5}{7}\)
1/4 + 3/8 x 8/7
= ( 1/4 x 3/8 ) x 8/7
= 5/8 x 8/7
= 40/56 .
#Songminhtử