Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
3/5*x+9/10 == -7/5*x+7/2
⇒ algebra.equations.linear.balance.remove-div, factor=106*x+9 == -14*x+35
⇒ algebra.equations.linear.balance.var-left-plus, term=14*x20*x+9 == 35
⇒ algebra.equations.linear.balance.con-right-minus, term=920*x == 26
⇒ algebra.equations.linear.balance.scale-to-one, factor=20x == 13/10