Question

1. combine like terms -6 + 3p - 9 + 4p

Explanation:

Step1: Group like terms

We have the expression \(-6 + 3p - 9 + 4p\). Group the constant terms (the terms without \(p\)) and the terms with \(p\) together: \((-6 - 9)+(3p + 4p)\).

Step2: Combine constant terms

First, combine the constant terms: \(-6-9=-15\).

Step3: Combine terms with \(p\)

Next, combine the terms with \(p\): \(3p + 4p = 7p\).

Step4: Write the final expression

Put the combined terms together: \(7p-15\).

Answer:

\(7p - 15\)