Question 95214
{{{3x + (5 + 6x) = 3x + (6x + 5)}}} Commutative property of addition (the terms 5 and 6x switched places)


= {{{(3x + 6x) + 5}}}   Associative property of addition (the parenthesis was moved from the group {{{6x+5}}} to {{{3x+6x}}})



= {{{(3 + 6)x + 5}}}   Distributive property  (the x term was factored out. Notice if you distribute, you get {{{3x+6x}}} again)



={{{9x+5}}}  None of the four properties (Associative, Commutative, Distributive, or Additive Identity ) aren't in use in this step. You are simply adding 3 and 6 to get 9