Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
-4*x+7 == 3*x
⇒ algebra.equations.linear.balance.var-right-plus, term=4*x7 == 7*x
⇒ algebra.equations.linear.balance.scale-to-one, factor=71 == x
⇒ algebra.equations.linear.flipx == 1