\(\frac{3}{2}:\frac{9}{4}+\frac{21}{8}=\frac{2}{3}+\frac{21}{8}=\frac{16}{24}+\frac{63}{24}=\frac{79}{24}\)
\(\frac{3}{2}:\frac{9}{4}+\frac{21}{8}\)
\(=\frac{2}{3}+\frac{21}{8}\)
\(=\frac{79}{24}\)
\(\frac{3}{2}\div\frac{9}{4}+\frac{21}{8}=\frac{12}{18}+\frac{21}{8}=4\frac{1}{8}\)
3/2 : 9/4 + 21/8 =2/3 + 21/8 =79/24