Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

1/2*x+3/4 == 2/5*x-1/4

⇒ algebra.equations.linear.balance.remove-div, factor=20

10*x+15 == 8*x-5

⇒ algebra.equations.linear.balance.var-left-minus, term=8*x

2*x+15 == -5

⇒ algebra.equations.linear.balance.con-right-minus, term=15

2*x == -20

⇒ algebra.equations.linear.balance.scale-to-one, factor=2

x == -10