Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

-1/10*x-1/4 == 3/4

⇒ algebra.equations.linear.balance.remove-div, factor=20

-2*x-5 == 15

⇒ algebra.equations.linear.balance.con-right-plus, term=5

-2*x == 20

⇒ algebra.equations.linear.balance.scale-to-one, factor=-2

x == -10