Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
-10 == 3*x+7
⇒ algebra.equations.linear.balance.con-left-minus, term=7-17 == 3*x
⇒ algebra.equations.linear.balance.scale-to-one, factor=3-17/3 == x
⇒ algebra.equations.linear.flipx == -17/3