Question 1001442
m mother, d daughter;
{{{system(2m=8+6d,(m-10)+(d-10)=44)}}}


{{{system(m=4+3d,m+d-20=44)}}}


{{{m+d=64}}}
-
{{{4+3d+d=64}}}
{{{4d=64-4}}}
{{{4d=60}}}
{{{d=60/4=30/2=15}}}


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Mistake is now corrected.