Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

-2 == -4*x+14

⇒ algebra.equations.linear.balance.con-left-minus, term=14

-16 == -4*x

⇒ algebra.equations.linear.balance.scale-to-one, factor=-4

4 == x

⇒ algebra.equations.linear.flip

x == 4