Which is Commutative property
Associative property
3(4+5)=12+15
5+6+2=2+5+6
7+(3+4)=(7+3)+4
1) The first equation illustrates the commutative property because the order in which the numbers are added does not change the sum.
2) The second equation illustrates the associative property because the grouping of the numbers being added does not change the sum.
3) The third equation also illustrates the associative property because the grouping of the numbers being added does not change the sum.