Chapter 8.1, Problem 67CCR

To determine

To simplify the expression $9p+4+3p$

Answer to Problem 67CCR

  $12p+4$

Explanation of Solution

Given information:

The expression, $9p+4+3p$

Concept used:

Rules of Addition/ Subtraction:

• Two numbers with similar sign always get added and the resulting number will carry the similar sign.
• Two numbers with opposite signs always get subtracted and the resulting number will carry the sign of larger number.

Calculation:

In order to simplify the given expression, add the like terms as shown below

  $\begin{array}{c}9p+4+3p\\ =\left(9p+3p\right)+4\\ =12p+4\end{array}$

Thus, the given expression simplifies to $12p+4$