Respuesta :
[tex]\huge\underline{\boxed{Hi\;there!}}}[/tex]
Like terms are "from the same family"
In the given expression, 18p and 2p are like terms.
Let's add them:
18p+2p-79+89
20p+10
[tex]\huge\boxed{\mathfrak{Answer:{\boxed{\boxed{20p+10}}}}}[/tex]
[tex]\bigstar[/tex] I really hope it helps you!
[tex]\rm{Have\;a\;splendiferous\;day![/tex]
[tex]\bold{FabulousKingdom}[/tex]
[tex]\huge\boxed{\bf{Process:}}[/tex]
[tex]{\boxed {\bold {18p+\ 2p=\ 20p}}}}}[/tex]
[tex]{\boxed {\bold {+89\ -79=\ +10}}}}}[/tex]
[tex]{\huge{\underline{\boxed{\purple{\mathcal{ANSWER:}}}}}}[/tex]
[tex]\:\:\:\huge\color{}\boxed{\colorbox{}{20p+10}}\\\\[/tex]
[tex]\frak{\pmb{\underline\green{NOTE:}}}[/tex] 89 is greater than 79 and it was positive, so 10 is positive and not negative, that's fine.