Question 1209904
NO!

Danelle, 30 and Simon, 6.


Solve could be like this.
{{{system(x=d/5,x+6=(d+6)/3)}}}

{{{d/5+6=(d+6)/3}}}

{{{15(d/5+6)=15((d+6)/3)}}}

{{{3d+15*6=5(d+6)}}}

{{{15*6-5*6=2d}}}

{{{10*6=2d}}}

{{{d=30}}} so Danielle is 30.