step-by-step explanation:
in the absence of parentheses, i will have to make some assumptions: i interpret your (3x+5/y^6)(4y^3/5) to mean:
3x + 5 4y^(3/5) (3x + 5)(4)
* =
y^6 1 y^(6-3/5)
if this is not what you expected, repost your question using parentheses to indicate whether you meant
4y^3
or 4y^(3/5)
5