Question 170993
I guess you're looking for the age?
Let {{{x}}}=age
Then via condition,
{{{7+2x=51}}}
{{{2x=51-7=44}}}
{{{cross(2)x/cross(2)=cross(44)22/cross(2)}}}
{{{highlight(x=22yrs)}}}, ANSWER
Check via condition,
{{{7+2*22=51}}}
{{{7+44=51}}}
{{{51=51}}}
Thank you,
Jojo