Question 1183090
{{{system(f-5+2m=65,m-5+3f=130)}}}


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{{{m=130+5-3f}}}
{{{m=135-3f}}}
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{{{f-5+2(135-3f)=65}}}
{{{f-5+270-6f=65}}}
{{{-5f=65+5-270}}}
{{{5f=270-70}}}
{{{5f=200}}}
{{{highlight(f=40)}}}