Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

-10 == -5*x+3

⇒ algebra.equations.linear.balance.con-left-minus, term=3

-13 == -5*x

⇒ algebra.equations.linear.balance.scale-to-one, factor=-5

13/5 == x

⇒ algebra.equations.linear.flip

x == 13/5