Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
1/2*x-4 == 2*x+5/2
⇒ algebra.equations.linear.balance.remove-div, factor=2x-8 == 4*x+5
⇒ algebra.equations.linear.balance.var-right-minus, term=x-8 == 3*x+5
⇒ algebra.equations.linear.balance.con-left-minus, term=5-13 == 3*x
⇒ algebra.equations.linear.balance.scale-to-one, factor=3-13/3 == x
⇒ algebra.equations.linear.flipx == -13/3