It dispensed with the labour theory of value inherited from classical economics in favour of a marginal utility theory of value on the demand side and a more general theory of costs on the supply side.
Ijja as labour theory n alqim amosan etari n aqtisad wan alasal ardahan fal utility theory tan alqim daɣ achrut wa ilzaman d general theory n issukan daɣ achrut wan al-imdad