Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
-5*x == -4-3*x
⇒ algebra.equations.linear.balance.var-left-plus, term=3*x-2*x == -4
⇒ algebra.equations.linear.balance.scale-to-one, factor=-2x == 2