Divide
Y^6 X^3 / y^5 X^4
Divide
Y^6 X^3 / y^5 X^4
This follows the same rule as your previous question:
y^6*x^3/y^5*x^4 = y^(6-5)*x^(3-4) = y*x^-1
Recall that a negative power is the reciprocal. For example, x^-2 = 1/x^2
so, the final answer is:
y/x