Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
21*x+3 == 4-16*x
⇒ algebra.equations.linear.balance.var-left-plus, term=16*x37*x+3 == 4
⇒ algebra.equations.linear.balance.con-right-minus, term=337*x == 1
⇒ algebra.equations.linear.balance.scale-to-one, factor=37x == 1/37