Question 1069996
c Chloe
s Sarah


This is the description transformed into equations:
{{{system(c=3s+8,s-c=s-14)}}}.


You should look at that second-difference equation first.  You may be able to do two steps in your head and SEE Chloe's age.




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{{{s-c=s-14}}}, no way to isolate s in this equation.
{{{s-c+(-s)=s-14+(-s)}}}
{{{s+(-c)+(-s)=s+(-14)+(-s)}}}
{{{s+(-s)+(-c)=s+(-s)+(-14)}}}
{{{-c=-14}}}
{{{highlight(c=14)}}}, but could have been done in fewer steps.
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{{{c=3s+8}}}
{{{c=3*14+8}}}
{{{c=42+8}}}
{{{highlight(c=50)}}}