We have the following:
[tex](-13.4)+12.2[/tex]In operations like addition and subtraction, the order of the numbers can affect the result.
Let's compare all the cases like this
[tex]\begin{gathered} -13.4+12.2=-1.2 \\ 13.4+12.2=25.6 \\ 13.4-12.2=1.2 \end{gathered}[/tex]In each case we obtain a different value, so the expressions are not the same
