Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
4-6*x == -x
⇒ algebra.equations.linear.balance.var-right-plus, term=6*x4 == 5*x
⇒ algebra.equations.linear.balance.scale-to-one, factor=54/5 == x
⇒ algebra.equations.linear.flipx == 4/5