Chapter 1.4, Problem 11GP

To determine

To simplify the expression $\left(12+m\right)+4$ .

Answer to Problem 11GP

  $16+m$

Explanation of Solution

Given information:

The expression: $\left(12+m\right)+4$ .

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.

Rules of Multiplication/ Division:

• The product/quotient of two similar sign numbers is always positive.
• The product/quotient of two numbers with opposite signs is always negative.

Associative Property of Addition: $a+\left(b+c\right)=\left(a+b\right)+c$

Calculation:

In order to simplify the expression $\left(12+m\right)+4$ , first remove the parenthesis and then combine the like terms to simplify further as shown below,

  $\begin{array}{c}\left(12+m\right)+4=\left(12+4\right)+m\\ =\left(16\right)+m\\ =16+m\end{array}$

Thus, the given expression simplifies to $16+m$ .