Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
2*x == 9*(7-2/3*x)-36
⇒ algebra.equations.linear.balance.distribute2*x == 63-6*x-36
⇒ algebra.equations.linear.balance.collect2*x == 27-6*x
⇒ algebra.equations.linear.balance.var-left-plus, term=6*x8*x == 27
⇒ algebra.equations.linear.balance.scale-to-one, factor=8x == 27/8