Question 1082647
m and n, integers

{{{system(m+n=66,1+4m=-5+2n)}}}


{{{4m=-1-5+2n}}}
{{{4m=-6+2n}}}
{{{2m=-3+n}}}
{{{n=2m+3}}}
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{{{m+(2m+3)=66}}}
{{{3m+3=66}}}
{{{3m=63}}}
{{{highlight(m=21)}}}
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{{{highlight(n=45)}}}