Cant figure this one out please help.
Which of the following expressions could be simplified further?

2x + 3m + 7n + 4z − 5p

6x − 7m + 9x

4x + 3m − 5z + 8a

2x + 3m − 5y + 4z

Question

Cant figure this one out please help.
Which of the following expressions could be simplified further?

 2x + 3m + 7n + 4z − 5p

 6x − 7m + 9x

 4x + 3m − 5z + 8a

 2x + 3m − 5y + 4z

anonymous · Answer

Here's what will help with these type of problems: Do you see any variable letter repeated more than once?

Let me know if you see the answer now :-)

jhonyy9 · Answer

second (15x-7m

anonymous · Answer

*sigh*  yes johnyy9...  I was trying to help them learn the trick.  Teach a man to fish rather than give him one, ya know?