Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
-16 == 6*x+5
⇒ algebra.equations.linear.balance.con-left-minus, term=5-21 == 6*x
⇒ algebra.equations.linear.balance.scale-to-one, factor=6-7/2 == x
⇒ algebra.equations.linear.flipx == -7/2