Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

6*x-16 == 2*x

⇒ algebra.equations.linear.balance.var-left-minus, term=2*x

4*x-16 == 0

⇒ algebra.equations.linear.balance.con-right-plus, term=16

4*x == 16

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

x == 4