Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

1/4*x == 2*x+5/4

⇒ algebra.equations.linear.balance.remove-div, factor=4

x == 8*x+5

⇒ algebra.equations.linear.balance.var-left-minus, term=8*x

-7*x == 5

⇒ algebra.equations.linear.balance.scale-to-one, factor=-7

x == -5/7