A. <span>–13 + 27 = 27 + (–13) is an example of the commutative property.
The commutative property states that a + b = b + a.</span>
It tells you how temperature varies with pressure :)
30=12m
you divide both sides by 12
so 30/12 is 2.5
The answer is 1/2 I think or 1
