Question 329067
These are so much fun to figure out:
{{{(1/2)(A+4)+(1/3)(A-3)=21}}}
{{{(A/2+2)+(A/3-1)=21}}}
{{{(3A)/6+(2)+(2A)/6-(1)=21}}}
{{{(5A)/6+1=21}}}
{{{(5A)/6=20}}}
{{{(5A)=120}}}
{{{highlight(A=24)}}}