Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

7*x-4*(4*x-2) == 18-2*(4*x+2)

⇒ algebra.equations.linear.balance.distribute

7*x-16*x+8 == 18-8*x-4

⇒ algebra.equations.linear.balance.collect

-9*x+8 == 14-8*x

⇒ algebra.equations.linear.balance.var-right-plus, term=9*x

8 == 14+x

⇒ algebra.equations.linear.balance.con-left-minus, term=14

-6 == x

⇒ algebra.equations.linear.flip

x == -6