Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

4*x-10 == -x+3

⇒ algebra.equations.linear.balance.var-left-plus, term=x

5*x-10 == 3

⇒ algebra.equations.linear.balance.con-right-plus, term=10

5*x == 13

⇒ algebra.equations.linear.balance.scale-to-one, factor=5

x == 13/5