Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
2*x-8 == 18-x
⇒ algebra.equations.linear.balance.var-left-plus, term=x3*x-8 == 18
⇒ algebra.equations.linear.balance.con-right-plus, term=83*x == 26
⇒ algebra.equations.linear.balance.scale-to-one, factor=3x == 26/3