$5x+\frac{ 1 }{ 5 }+3=180$
Calculate the sum$5x+\frac{ 16 }{ 5 }=180$
Move the constant to the right-hand side and change its sign$5x=180-\frac{ 16 }{ 5 }$
Calculate the difference$5x=\frac{ 884 }{ 5 }$
Divide both sides of the equation by $5$$\begin{align*}&x=\frac{ 884 }{ 25 } \\&\begin{array} { l }x=35 \frac{ 9 }{ 25 },& x=35.36\end{array}\end{align*}$