Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

2 == 6*x-12

⇒ algebra.equations.linear.balance.con-left-plus, term=12

14 == 6*x

⇒ algebra.equations.linear.balance.scale-to-one, factor=6

7/3 == x

⇒ algebra.equations.linear.flip

x == 7/3