Identify each property shown
9.5+ 6.1+2.3=9.5+2.3+6.1
7.2x(1.6x3.9)=(7.2x1.6)x3.9
9.5+ 6.1+2.3=9.5+2.3+6.1
7.2x(1.6x3.9)=(7.2x1.6)x3.9