Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
-5*x+4 == -3*x
⇒ algebra.equations.linear.balance.var-right-plus, term=5*x4 == 2*x
⇒ algebra.equations.linear.balance.scale-to-one, factor=22 == x
⇒ algebra.equations.linear.flipx == 2