Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
21 == 11*x-12
⇒ algebra.equations.linear.balance.con-left-plus, term=1233 == 11*x
⇒ algebra.equations.linear.balance.scale-to-one, factor=113 == x
⇒ algebra.equations.linear.flipx == 3