Question 1090665
s, Son
m, Man

{{{system(s+m=82,m-11=2(s-11))}}}


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{{{m=11+2s-22}}}
{{{m=2s-11}}}
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{{{s+(2s-11)=82}}}
{{{3s=82+11}}}
{{{3s=93}}}
{{{s=31}}}-------son
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{{{m=51}}}------man