Which facts could be applied to simplify this expression? check all that apply. (-5x--3z).

to subtract like terms, subtract the coefficients, not the variables.
like terms are terms that contain the same variable, raised to the same power.
the simplified expression is -6x-3y+3z.
only combine terms which contain the same variable.
) is equivalent to -x, so -5x-x=-6x.
the simplified expression is -4x-3y+3z