Exercise algebra.equations.linear.balance
Description
Solve a linear equation using only balance rules.
Derivation
x+3 == 10*(1/2*x+3/2)
⇒ algebra.equations.linear.balance.distributex+3 == 5*x+15
⇒ algebra.equations.linear.balance.var-right-minus, term=x3 == 4*x+15
⇒ algebra.equations.linear.balance.con-left-minus, term=15-12 == 4*x
⇒ algebra.equations.linear.balance.scale-to-one, factor=4-3 == x
⇒ algebra.equations.linear.flipx == -3