Question 320325
{{{(s+y)/(sy^2)+(3s+y)/(s^2y)=(s+y)s/(s^2y^2)+(3s+y)y/(s^2y^2)}}}
{{{(s+y)/(sy^2)+(3s+y)/(s^2y)=((s+y)s+(3s+y)y)/(s^2y^2)}}}
{{{(s+y)/(sy^2)+(3s+y)/(s^2y)=((s^2+sy)+(3sy+y^2))/(s^2y^2)}}}
{{{(s+y)/(sy^2)+(3s+y)/(s^2y)=(s^2+4sy+y^2)/(s^2y^2)}}}