Answer :
One of the properties in mathematics that can be used in addition is the commutative property
According to the commutative property of addition, changing the order of the numbers we are adding, does not change the.
we can observe that
[tex]\begin{gathered} \text{For the left hand side} \\ 4+(x+2)=4+x+2=6+x \end{gathered}[/tex]For the right-hand side
[tex](4+x)+2=4+x+2=6+x[/tex]We can see that the sides are equal
Thus, the commutative property of addition is used