Posted by Maria on .
how do I simplify the following expressions by collecting like terms?
x+2+x=
x+x+x+4+8+x=
2x9+x

PreAlgebra 7th Grade 
Ms. Sue,
x+2+x= 2x + 2
x+x+x+4+8+x= 4x + 12
How would you collect the like terms for your last question?