Question 1080693
1.{{{M=L+12}}} ... michael is 12 years older than lynn
2.{{{M+L=84}}} ... The sum of lynn's and michaels age is 84
Substituting 1 into 2,
{{{(L+12)+L=84}}}
{{{2L+12=84}}}
{{{2L=72}}}
Solve for L then use either equation to solve for M.