\(a,=\dfrac{4\times4\times5}{3\times16}=\dfrac{5}{3}\)
\(b,=\dfrac{3\times2\times7\times5}{3}=60\)
\(a,\dfrac{4}{3}\times4\times\dfrac{5}{16}=\dfrac{4\times4\times5}{3\times1\times4\times4}=\dfrac{5}{3}\)
\(b,3:\dfrac{1}{2}:\dfrac{3}{7}:5=\dfrac{14}{5}\)
\(\dfrac{4}{3}x4x\dfrac{5}{16}=\dfrac{80}{48}=\dfrac{5}{3}\)
\(3x2x\dfrac{7}{3}x\dfrac{1}{5}=\dfrac{42}{15}=\dfrac{14}{5}\)
a. \(\dfrac{4}{3}\)x 4 x \(\dfrac{5}{16}\)= \(\dfrac{16}{3}\)x \(\dfrac{5}{16}\)= \(\dfrac{5}{3}\)
b. 3 : 1/2 : 3/7 : 5 = 21 : 3/7 : 5 = 49 : 5 = 49/5
a)4/3 x 4 x 5/16
=4/3 x5/4
=5/3
b)3 : 1/2 : 3/7 : 5
=3 x 2 x 7/3 x 1/5
=6 x 7/15
=14/5
Chúc bạn học tốt!
