Question 214754
Let Frances be represented by f.
You are told john is 10 years younger than frances. so {{{j= f - 10}}}
You are also told
{{{j + f = 54}}}
{{{(f-10) + f = 54}}}
{{{2f - 10 = 54}}}
{{{2f = 64}}}
{{{f = 32}}}
Frances is 32 and John is 22.