[tex]a = 1 \dfrac{1}{2} = \dfrac{1 \cdot2 + 1}{2} = \dfrac{3}{2} [/tex]
[tex]b = 0.2 = \dfrac{2 {}^{(2} }{10} = \dfrac{1}{5} [/tex]
[tex] \dfrac{a}{b} = \dfrac{ \dfrac{3}{2} }{ \dfrac{1}{5} } = \dfrac{3}{2} : \dfrac{1}{5} = \dfrac{3}{2} \cdot 5 = \dfrac{3 \cdot5}{2} = \boldsymbol {\dfrac{15}{2}} [/tex]