we must check the following equality:
[tex]-40+7\cdot p=3+5\cdot(8\cdot p-2)[/tex]
replacing p = -1
[tex]\begin{gathered} -40+7\cdot(-1)=3+5\cdot(8\cdot(-1)-2) \\ -40-7=3+5\cdot(-8-2) \\ -47=3+5\cdot(-10) \\ -47=3-50 \\ -47=-47 \end{gathered}[/tex]
Therefore, the answer is yes
