Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
-1 == 8*x-20
⇒ algebra.equations.linear.balance.con-left-plus, term=2019 == 8*x
⇒ algebra.equations.linear.balance.scale-to-one, factor=819/8 == x
⇒ algebra.equations.linear.flipx == 19/8