HEL I BEGGING YO ALSO SHOW YOUR WORK

1 ) Use the expression below to answer parts (a) and (b)

5x-3x-4y+ 1/3 (6x-12y)

ANSWER THESE QUESTIONS !!!
a) Simplify the expression by combining like terms. (SHOW YOUR WORK.)

b) Express the answer from part (a) as an equivalent expression in factored form.

C .In the space below PROVE how you know your expressions are equivalent to the original expression.