Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
4-5*x == 0
⇒ algebra.equations.linear.balance.con-right-minus, term=4-5*x == -4
⇒ algebra.equations.linear.balance.scale-to-one, factor=-5x == 4/5