algibra 9th grade
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).
algibra 9th grade
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).
--any number minus itself is 0.
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.
Comments
so if i have a problem 3x+14=3x it would solve to be 0=14?
Good thinking! When you have something such as 0=14, it's a false statement, which means there is "no solution," or "null set," if you use that notation.