Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
4*x-7 == -5*x-24
⇒ algebra.equations.linear.balance.var-left-plus, term=5*x9*x-7 == -24
⇒ algebra.equations.linear.balance.con-right-plus, term=79*x == -17
⇒ algebra.equations.linear.balance.scale-to-one, factor=9x == -17/9