Question

Rút gọn các phân số sau :

\(\frac{18}{30},\frac{64}{80},\frac{36}{27},\frac{45}{35}\)

Answer 1

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Answer 2

Rút gọn các phân số sau :

\(\frac{18}{30}=\frac{18\div6}{30\div6}=\frac{3}{5}\)

\(\frac{64}{80}=\frac{64\div16}{80\div16}=\frac{4}{5}\)

\(\frac{36}{27}=\frac{36\div9}{27\div9}=\frac{4}{3}\)

\(\frac{45}{35}=\frac{45\div5}{35\div5}=\frac{9}{7}\)

Answer 3

\(\frac{18}{30}=\frac{3}{5}\)

\(\frac{64}{80}=\frac{4}{5}\)

\(\frac{36}{27}=\frac{4}{3}\)

\(\frac{45}{35}=\frac{9}{7}\)

Answer 4

Rút gọn các phân số sau:

\(\frac{18}{30},\frac{64}{80},\frac{36}{27},\frac{45}{35}\)

\(\frac{18}{30}=\frac{16:6}{30:6}=\frac{3}{5}\) 

\(\frac{64}{80}=\frac{64:16}{80:16}=\frac{4}{5}\)

\(\frac{36}{27}=\frac{36:9}{27:9}=\frac{4}{3}\)

\(\frac{45}{35}=\frac{45:5}{35:5}=\frac{9}{7}\)

Answer 5

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Answer 6

\(\frac{18}{30}=\frac{18}{30}:\frac{6}{6}=\frac{3}{5}\)                      \(\frac{64}{80}=\frac{64}{80}:\frac{8}{8}=\frac{8}{10}:\frac{2}{2}=\frac{4}{5}\)                \(\frac{36}{27}=\frac{36}{27}:\frac{3}{3}=\frac{12}{9}:\frac{3}{3}=\frac{4}{3}\)   \(\frac{45}{35}=\frac{45}{35}:\frac{5}{5}=\frac{9}{7}\)                        

Answer 7

=\(\frac{3}{5}\),\(\frac{4}{5}\),\(\frac{3}{1}\),\(\frac{9}{7}\)