Question

h)21/8 x 16/14 x 7/2 x 8/7

k)5/24 x 12/15 x 48/12

Giúp mik vs,ai nhanh mik tick !

 

Answer 1

\(h,=\dfrac{21}{8}.\dfrac{8}{7}.\dfrac{7}{2}.\dfrac{8}{7}=\dfrac{21}{7}.\dfrac{7}{2}.\dfrac{8}{7}=3.\dfrac{7}{2}.\dfrac{8}{7}\\ =3.\dfrac{8}{2}=3.4=12\\ k,=\dfrac{5}{24}.\dfrac{4}{5}.4=\dfrac{4}{24}.4=\dfrac{1}{6}.4=\dfrac{2}{3}\)

Answer 2

H. 3x7/2= 21/2x8/7= 7
K. 1/6x48/12= 2/3

Answer 3

h)21/8 x 16/14 x 7/2 x 8/7

=21/8 x 8/7 x 7/2 x 8/7 

=21/7 x 7/2 x 8/7

=3 x 7/2 x 8/7

=3 x 8/2 =3x4=12

k)5/24 x 12 /15 x 48/12

=5/24 x 4/5 x 4

=4/24 x 4 = 1/6 x 4 = 2/3

Học tốt!