Answer:
[tex]\boxed {\sf-6p-78}[/tex]
Step-by-step explanation:
[tex]\sf -5\left(3p+3\right)+9\left(-7+p\right)[/tex]
Expand:
[tex]\sf -5\left(3p+3\right)[/tex]
[tex]\sf -15p-15[/tex]
Expand:
[tex]\sf 9\left(-7+p\right)[/tex]
[tex]\sf -15p-15+9\left(-7+p\right)[/tex]
[tex]\sf -15p-15-63+9p[/tex]
[tex]-6p-78[/tex]
