Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

0 == 4*x-16

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

16 == 4*x

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

4 == x

⇒ algebra.equations.linear.flip

x == 4