Tính
\(\frac{15}{25}+\frac{80}{125}+\frac{12}{42}+\frac{78}{100}+\frac{18}{12}\)
\(\frac{3}{5}+\frac{16}{25}+\frac{6}{21}+\frac{39}{50}+\frac{3}{2}\)
\(\frac{15}{25}+\frac{16}{25}+\frac{39}{50}+\frac{6}{21}+\frac{3}{2}\)
\(\frac{62}{50}+\frac{39}{50}+\frac{12}{42}+\frac{63}{42}\)
\(\frac{101}{50}+\frac{75}{42}\)
\(\frac{4242}{2100}+\frac{3750}{2100}\)
\(\frac{7992}{2100}\)