Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
2+1/9*x == 7/2-1/3*x
⇒ algebra.equations.linear.balance.remove-div, factor=1836+2*x == 63-6*x
⇒ algebra.equations.linear.balance.var-left-plus, term=6*x36+8*x == 63
⇒ algebra.equations.linear.balance.con-right-minus, term=368*x == 27
⇒ algebra.equations.linear.balance.scale-to-one, factor=8x == 27/8