- #1
evosy1978
- 6
- 0
Hello all, I am new here and I am currently studying IGCSE Math. Hope you can explain something to me.
I have what you may think is a basic question... I just wanted to query it.
Its to do with cancelling out brackets.
so
2x-(x+3) = 2x-x-3 = x-3
I think I understand why the +3 inside the brackets changes to a -3. (its because of the minus before the brackets)
So what about the +x inside the brackets aswell? why does this not change to a -x aswell?
and therefore ending up with 2x - -x -3 and then 2x + x - 3
2x - (x+3)
2x - -x -3
2x + x -3 = 3x-3
I hope I have explained my way of thinking clearly? (even though I know its wrong could someone explain why its wrong)
Thanks
I have what you may think is a basic question... I just wanted to query it.
Its to do with cancelling out brackets.
so
2x-(x+3) = 2x-x-3 = x-3
I think I understand why the +3 inside the brackets changes to a -3. (its because of the minus before the brackets)
So what about the +x inside the brackets aswell? why does this not change to a -x aswell?
and therefore ending up with 2x - -x -3 and then 2x + x - 3
2x - (x+3)
2x - -x -3
2x + x -3 = 3x-3
I hope I have explained my way of thinking clearly? (even though I know its wrong could someone explain why its wrong)
Thanks