If i have 3x- 3x do i get x or does it cancel out

Question

algibra 9th grade

Answer 1

Or, if you wish, think of the variable as standing for a thing, such as "apples."

3apples - 3 apples = 0apples, or just plain 0 (zero).

Answer 2

--any number minus itself is 0.

Answer 3

It cancels out. The best way to see this is by factoring out the x giving you x(3-3) = x(0). Anything times zero is zero, so it cancels out.