ta có : \(\frac{18\cdot34+\left(-18\right)\cdot124}{\left(-36\right)\cdot17+9\cdot\left(-52\right)}\) =\(\frac{18\cdot34-18\cdot124}{9\cdot\left(-4\right)\cdot17+9\cdot-52}\)
=\(\frac{18\cdot\left(34-124\right)}{9\cdot\left(-68+-52\right)}\)
=\(\frac{18\cdot\left(-90\right)}{9\cdot\left(-120\right)}=\frac{3}{2}\)
