<PRE><B>Question 172684</B>
Perform the indicated operation and simplify:
6x + 9/3x - 15 * x - 5/4x + 6

Is the middle of this expression really 15 * x? If so, it is can be rewritten 15x. If that is really a plus or minus, then it is the number 15 and x are two different terms. Check this.


First: group the terms of this expression so that those with an x and those that are just numbers are together.

6x + 9/3x - 15x -5/4x  + 6    or    6x + 9/3x + x - 5/4x   + 6 - 15


9/3 can be simplified to 3. 6-15 can be simplifed to -9

6x + 3x - 15x -5/4x  + 6    or    6x + 3x + x - 5/4x   - 9


Then, combine the like terms. 

(6 + 3 - 15 - 5/4)x  + 6    or    (6 + 3 + 1 - 5/4)x   + - 9

-29/4 x  + 6       or         35/4 x - 9


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