Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

3 == 5*x-10
algebra.equations.linear.flip
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