algebra
posted by sharon on .
name the property that justifies (2.6) +7 = 7+(2.6)

Commutative Property (think commute or move around)is the one that refers to moving stuff around.
For addition, the rule is a + b = b + a
From purplemath dot com 
what property of real numbers justifies 7+(3+2x)=(7+3)+2x ?

comm. property of addition