Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
-3 == 7*x+2
⇒ algebra.equations.linear.balance.con-left-minus, term=2-5 == 7*x
⇒ algebra.equations.linear.balance.scale-to-one, factor=7-5/7 == x
⇒ algebra.equations.linear.flipx == -5/7