select ALL the expressions that are equivalent to 3x + 5 ( -4x + 12 ) - ( x - 3 )
Expanding the brackets gives us,
3x - 20x + 60 - x + 3 <-- this is the same as C.
Now add together the x-terms and the constants
(3x - 20x - x) + (60 + 3)
Simplify the above
-18x + 63 <-- this is the same as A.
Answer: Both options A. and C. are equivalent to the original expression