Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

5*(2*x+1) == 4*(x-4)

⇒ algebra.equations.linear.balance.distribute

10*x+5 == 4*x-16

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

6*x+5 == -16

⇒ algebra.equations.linear.balance.con-right-minus, term=5

6*x == -21

⇒ algebra.equations.linear.balance.scale-to-one, factor=6

x == -7/2