Posted by BWB on .
Identify the properties
( 5 + 3) + 4 = ( 3 + 5) + 4 = Communitive property
( 3 × 2) × 8 = 3 × ( 2 × 8) = associative property

Math. Did I get the right answer? 
bobpursley,
No, both of these are wrong.
The first is associative, the second is communicative.
http://www.purplemath.com/modules/numbprop.htm 
Math. Did I get the right answer? 
BWB,
Thank you.for your help. Thank you for the website. I love it. This is a very informative site.

math/substituion method 
bob,
x+3y=6
3x+9y=6