Question

Simplify the expression (-13.4) + 12.2. How are (13.4) + 12.2 and 13.4 +(-12.2) related? Using a property of operations, what can you say about their sum?

Answer 1

We have the following:

`(-13.4)+12.2`

In operations like addition and subtraction, the order of the numbers can affect the result.

Let's compare all the cases like this

`\begin{gathered} -13.4+12.2=-1.2 \\ 13.4+12.2=25.6 \\ 13.4-12.2=1.2 \end{gathered}`

In each case we obtain a different value, so the expressions are not the same