Variable $y$ cannot be equal to $6$ since division by zero is not defined. Multiply both sides of the equation by $4\left(y-6\right)$, the least common multiple of $y-6,4$.
$$4\left(y+5\right)=5\left(y-6\right)$$
Use the distributive property to multiply $4$ by $y+5$.
$$4y+20=5\left(y-6\right)$$
Use the distributive property to multiply $5$ by $y-6$.
