I don't understand how to solve this equation I'm looking for help

We need to simplify the following expression:
[tex]\begin{gathered} 4(\frac{3}{2}f+1)-7(f+5) \\ 4\cdot\frac{3}{2}f+4\cdot1-7\cdot f-7\cdot5 \\ 6f+4-7f-35 \\ -f-31 \\ So, \\ 4(\frac{3}{2}f+1)-7(f+5)=-f-31 \end{gathered}[/tex]