A1

QUESTION: Simplify the following expression.

$3p+3p+3pt-6pt+7p$

ANSWER: Firstly, collect the three like terms $3p, 3p,$ and $7p$ to get

$3p+3p+7p=13p$

Then, collect the like terms $3pt$ and $-6pt$ to get

$3pt-6pt=-3pt$

Therefore, the fully simplified expression is

$13p-3pt$