SOLUTION: When simplifying expressions, how are like terms determined?

Question 38476: When simplifying expressions, how are like terms determined?
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
Like terms are characterized by the exact same variables raised to the exact same powers...coefficients do not matter...
For example,
5(x^2)(y^6)(z^3) and -9(x^2)(y^6)(z^3) are like terms but
5(x^2)(y^6)(z^3) and -9(x^3)(y^5)(z^2) are not.
Not only must the letters be the same, but the powers of those letters must be exactly the same...
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