Question

Combine like terms to create an equivalent expression:
-n+(-4)-(-4n)+6

Answer 1

Because the brackets are already simplified we just need addition and subtraction which occurs from left to right so
-n-4- -4n+6
Two negative signs touching turns into a plus
-n-4+4n+6
-n+4n=3n
-4+6=2
So 3n+2 is the equivalent expression