Question

Answer 1

Bài 7:

\(\frac72=\frac{7\times5}{2\times5}=\frac{35}{10}\)

\(\frac25=\frac{2\times2}{5\times2}=\frac{4}{10}\)

\(\frac{108}{25}=\frac{108\times4}{25\times4}=\frac{432}{100}\)

Bài 6:

a: MSC=10

\(\frac12=\frac{1\times5}{2\times5}=\frac{5}{10}\)

\(\frac35=\frac{3\times2}{5\times2}=\frac{6}{10}\)

b: MSC=15

\(\frac25=\frac{2\times3}{5\times3}=\frac{6}{15}\)

\(\frac{7}{15}=\frac{7\times1}{15\times1}=\frac{7}{15}\)

c: MSC=12

\(\frac34=\frac{3\times3}{4\times3}=\frac{9}{12}\)

\(\frac16=\frac{1\times2}{6\times2}=\frac{2}{12}\)