Respuesta :

Answer:

[tex]=5x+15-9x+4\\=-4x+19\\[/tex]

- "-4x+19"

-- (Etc, ignore.) "Here are the basic steps to follow to simplify an algebraic expression:

-remove parentheses by multiplying factors.

-use exponent rules to remove parentheses in terms with exponents.

-combine like terms by adding coefficients.

-combine the constants."