Question 325464
{{{x=a/b}}} Start with the second equation.



{{{bx=a}}} Multiply both sides by 'b'.



So {{{a=bx}}}



{{{y=a/(a+b)}}} Move back to the first equation.



{{{y=(bx)/(bx+b)}}} Plug in {{{a=bx}}}



{{{y=(bx)/(b(x+1))}}} Factor out the GCF 'b' from the denominator.



{{{y=(cross(b)*x)/(cross(b)(x+1))}}} Cancel out the common terms.



{{{y=x/(x+1)}}} Simplify.



So the answer is {{{y=x/(x+1)}}}