Question

simplify the expression. Justify each step with a property: 12x + (7x + 9x) + 13x

please help...

Answer 1

I got 39x since I did (7x + 9x) first to get 16x then added 12x and 13x
EDIT: Nvm im wrong sorry ;/ its 41 its actually 7x+9x which is 16 + 12 for 28 then + 13 for answer 41.

Answer 2

the simplified answer is 41x