I just can't seem to get this right help? Simplify the following expression.
5x - 6y + 5z - x - 12y + 2z

Question

I just can't seem to get this right help? Simplify the following expression.
5x - 6y + 5z - x - 12y + 2z

anonymous · Answer

do you know what like terms are ?

anonymous · Answer

yes but i must be confusing myself somewhere

anonymous · Answer

like terms are, well, terms that have the same variable. For instance, 6y and 12y are like terms. You cannot mix terms that are not alike. You cannot add 5x + 5z because the terms are not alike.

So lets get our like terms together...
5x - x = 4x
-6y - 12y = - 18y
5z + 2z = 7z

now put them all together...
4x - 18y + 7z