Question 1097116
1.{{{F+C=38}}}
Seven years ago,
{{{F-7=3(C-7)}}}
{{{F-7=3C-21}}}
2.{{{F-3C=-14}}}
Multiply eq. 1 by 3 and add to 2,
{{{3F+3C+F-3C=114-14}}}
{{{4F=100}}}
Solve for F.