Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

2*(5-3*x)-6 == -x

⇒ algebra.equations.linear.balance.distribute

10-6*x-6 == -x

⇒ algebra.equations.linear.balance.collect

4-6*x == -x

⇒ algebra.equations.linear.balance.var-right-plus, term=6*x

4 == 5*x

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

4/5 == x

⇒ algebra.equations.linear.flip

x == 4/5