



 
Hi Dee, Suppose Blair is $b$ years old and Serena is $s$ years old. Blair is 12 years younger than Serena. Write this fact as an equation in $b$ and $s.$ Five years ago how old was Blair? How old was Serena? At that time Serena's age was five times Blair's age. Write this fact as an equation in $b$ and $s.$ Solve the two equations. Make sure you check your answer.  


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