Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

-5*x-24 == 4*x-7

⇒ algebra.equations.linear.balance.var-right-plus, term=5*x

-24 == 9*x-7

⇒ algebra.equations.linear.balance.con-left-plus, term=7

-17 == 9*x

⇒ algebra.equations.linear.balance.scale-to-one, factor=9

-17/9 == x

⇒ algebra.equations.linear.flip

x == -17/9