Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

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

⇒ algebra.equations.linear.balance.distribute

6-x == 10-6*x

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

6+5*x == 10

⇒ algebra.equations.linear.balance.con-right-minus, term=6

5*x == 4

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

x == 4/5