Question

Write an equivalent expression for 3x+12+7x+x

Answer 1

3x + 12 + 7x + x......combine like terms

(3x + 7x + 1x) = 11x.......x is the same as 1x
12....this has no like terms, but u cant forget about it

so we now have : 11x + 12 <==

Answer 2

Combine like terms (those with variables, and those without in this case)

3x + 7x + x = 11x

11x + 12 is your answer

hope this helps