Question 300755
{{{C=2J}}}
{{{(C-7)+(J-7)=16}}}
{{{((2J)-7)+(J-7)=16}}}
{{{3J-14=16}}}
{{{3J=30}}}
{{{J=10}}}
{{{C=2J}}}
{{{C=2(10)}}}
{{{C=20}}}
checking
{{{(C-7)+(J-7)=16}}}
{{{(20-7)+(10-7)=16}}}
{{{(13)+(3)=16}}}
{{{16=16}}}
correct