Originally Posted by

**david18** Hi I'm on this question where I hacve to find x:

__3x+5__ - __2x-1__ = 3

4 6

and i ended up with __9x + 15 - 4x - 2__ = __36__

12 = 12

so i removed the 12s to leave me with 9x + 15 - 4x - 2 = 36

Now for my question:

When I am simplifying the left hand side; does it become 5x + 13 or 5x + 17 because if the equation should be written as (9x + 15) - (4x - 2) it would mean a -- which is a plus to make 5x + 17...

edit: for some reason the denominators havent come up where i wanted them to be. but its 3x + 5 all over 4 and 2x - 1 all over 6

and the second error is that both sides should have 12 as their denominators