15,3 − (−8,4) × (−7 / 12) − (3,5)в квадрате

15,3-(-8,4)*(-7/12)-(3,5*3,5)=15,3-(-42/5)*(-7/12)-(12 1/4)=153/10-147/30-49/4=918/60-294/60-735/60=-111/60=-1 51/60