Question 1098043
{{{system(m=3b,m+5=(5/2)(b+5))}}}


{{{2m+10=5b+25}}}
{{{2m=5b+15}}}
{{{2(3b)=5b+15}}}
{{{6b=5b+15}}}
{{{highlight(b=15)}}}-----------Brother is 15.
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{{{highlight(45)}}}-----------Other person's age, 45.