Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

7 == -3*x-10

⇒ algebra.equations.linear.balance.con-left-plus, term=10

17 == -3*x

⇒ algebra.equations.linear.balance.scale-to-one, factor=-3

-17/3 == x

⇒ algebra.equations.linear.flip

x == -17/3