Question 978481
{{{a/b=3/2}}} and {{{(a-5)/(b-5)=5/3}}}.


{{{system(2a=3b,3(a-5)=5(b-5))}}}


{{{system(2a=3b,3a-15=5b-25)}}}


{{{system(2a=3b,3a-5b=15-25)}}}


{{{system(2a=3b,3a-5b=-10)}}}


{{{b=2a/3}}}


{{{3a-5(2a/3)=-10}}}
You can finish this...



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{{{9a-5*2*a=-10*3}}}

{{{-a=-30}}}

{{{a=30}}}-------but use this now to evaluate what is b.
{{{b=20}}}