Exercise algebra.equations.linear.balance

Description
Solve a linear equation using only balance rules.

Derivation

17 == 4-10*x
algebra.equations.linear.balance.con-left-minus, term=4
13 == -10*x
algebra.equations.linear.balance.scale-to-one, factor=-10
-13/10 == x
algebra.equations.linear.flip
x == -13/10