Chapter 1.5, Problem 14PPE

To determine

To find the value of x in equation

  $1\cdot x=3$ , and to name the property used.

Answer to Problem 14PPE

  $x=3$

And the property used is commutative property of addition.

Explanation of Solution

Given:

  $1\cdot x=3$

Concept Used:

Identity property of multiplication:

  $1\cdot a=a$

Calculation:

In order to find the value of x

  $1\cdot x=3$

Use identity property of multiplication according to which$1\cdot a=a$

Thus,

  $\begin{array}{c}1\cdot x=x\\ =3\\ \Rightarrow x=3\end{array}$

Thus, for given equation $x=3$ . And the property used is identity property of multiplication.