Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
1/5*x+7/5 == 2/3*x
⇒ algebra.equations.linear.balance.remove-div, factor=153*x+21 == 10*x
⇒ algebra.equations.linear.balance.var-right-minus, term=3*x21 == 7*x
⇒ algebra.equations.linear.balance.scale-to-one, factor=73 == x
⇒ algebra.equations.linear.flipx == 3