[ProtectOurFreedom]

I remember around fifth or sixth grade we would have puzzles like that and we would have to solve them by inspection because we didn't know symbolic algebra. Those problem drove me crazy. I suppose the really smart kids developed their own algebra to solve them.

I started learning symbolic notation in 8th grade, then, in ninth grade came Algebra 1 with simultaneous equations. Suddenly, things got SO much easier.

You posed a simple set of three simultaneous equations with three variables. Solve by successive substitution.

I went on to become a mechanical engineer. I might even remember how to ride a bike, too.

[sauropod]

You too, eh?

[Joe Brower]

Nicely done.