Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

4*(x-1) == 11*x-12

⇒ algebra.equations.linear.balance.distribute

4*x-4 == 11*x-12

⇒ algebra.equations.linear.balance.var-right-minus, term=4*x

-4 == 7*x-12

⇒ algebra.equations.linear.balance.con-left-plus, term=12

8 == 7*x

⇒ algebra.equations.linear.balance.scale-to-one, factor=7

8/7 == x

⇒ algebra.equations.linear.flip

x == 8/7