Question

Tính :

a) 4 x 6 x 8 / 6 x 12 x 16

b) 3 x 4 x 5 x 6 / 9 x 8 x 10 x 3

Answer 1

Bài làm

a ) \(\frac{4.6.8}{6.12.16}\)= \(\frac{4.6.8}{6.4.3.8.2}\)= \(\frac{1}{3.2}\)= \(\frac{1}{6}\)

b ) \(\frac{3.4.5.6}{9.8.10.3}\)= \(\frac{3.4.5.6}{3.3.4.2.5.6}\)= \(\frac{1}{3.2}\)=\(\frac{1}{6}\)

Answer 2

Tính :

a) 4 x 6 x 8 / 6 x 12 x 16=192/1152

b) 3 x 4 x 5 x 6 / 9 x 8 x 10 x 3=360/2160

Answer 3

#) Giải :

a)  \(\frac{4x6x8}{6x12x16}\)=  \(\frac{192}{1296}\)=  \(\frac{64}{432}\)=  \(\frac{32}{216}\)=  \(\frac{16}{108}\)=  \(\frac{8}{54}\)=  \(\frac{4}{27}\)

b) \(\frac{3x4x5x6}{9x8x10x3}\)= \(\frac{360}{2160}\)=  \(\frac{36}{216}\)= \(\frac{18}{108}\)=  \(\frac{6}{54}\)=  \(\frac{1}{9}\)

#) Chúc bn học tốt :D

Answer 4

\(\frac{4.6.8}{6.12.16}\)

=\(\frac{4.8}{3.4.2.8}\)

=\(\frac{1}{3.2}\)

=\(\frac{1}{6}\)

b)\(\frac{3..4.5.6}{9.8.10.3}\)

=\(\frac{4.5.6}{9.8.10}\)

=\(\frac{4.5.2.3}{3.3.2.4.2.5}\)

=\(\frac{1}{3.2}\)

=\(\frac{1}{6}\)