Question 101874
When you multiply, add exponents.
When dividing, subtract exponents.
{{{(9r^5u)/(m^6*3r^3m^2))}}}
{{{(9r^5u)/(m^8*3r^3))}}} add the m exponents
{{{(3r^2u)/(m^8))}}} divide 3 into 9 and subtract the r exponents.
Ed