SOLUTION: can you show me how to do these problems: 2n-3n and 2a-3a=7? thanks angie

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Question 27104: can you show me how to do these problems:
2n-3n and 2a-3a=7?
thanks
angie
Answer by elima(1433) About Me  (Show Source):
You can put this solution on YOUR website!
Do both problems =7?
2n-3n=?
2a-3a=7
You can subtract them,becuase they are like terms;
2a-3a=7
-a=7
No you do not want to leave x as negative, so you need to divide each side by -1;
-a%2F-1=7%2F-1
a=-7
If the first equation =7, you would solve it the same way.
=)