Answer:
10<em>m</em>
Step-by-step explanation:
Your teacher probably told you the necessary fundamentals of monomials. So, I'll just teach you the things needed for this particular question.
10<em>m</em>^3/(10<em>m</em>)(<em>m</em>)
First, in the denominator, since that <em>m</em> are being multiplied and they are the same <em>terms, </em>their exponents add:
10<em>m</em> * <em>m</em>
10<em>m</em>^1 * <em>m</em>^1
1 + 1 = 2
10<em>m</em>^2
Then, since that <em>m </em>are now being divided, their exponents subtract:
10<em>m</em>^3 / 10<em>m</em>^2
3 - 2 = 1
10<em>m</em>^1
10<em>m</em>