Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
1/2*x-13/2 == 2*x
⇒ algebra.equations.linear.balance.remove-div, factor=2x-13 == 4*x
⇒ algebra.equations.linear.balance.var-right-minus, term=x-13 == 3*x
⇒ algebra.equations.linear.balance.scale-to-one, factor=3-13/3 == x
⇒ algebra.equations.linear.flipx == -13/3