$x=\left( 30-\frac{ 15 }{ 4 }+0.75 \right) \times \frac{ 3 }{ 2 }$
Convert the decimal into a fraction$x=\left( 30-\frac{ 15 }{ 4 }+\frac{ 3 }{ 4 } \right) \times \frac{ 3 }{ 2 }$
Calculate the sum or difference$x=27 \times \frac{ 3 }{ 2 }$
Calculate the product$\begin{align*}&x=\frac{ 81 }{ 2 } \\&\begin{array} { l }x=40 \frac{ 1 }{ 2 },& x=40.5\end{array}\end{align*}$