a)13*9-48:6+12650:11=117-8+1150,(72)=1259,(72)
b)32*17+7095:165-78:26=544+43-3=584
c)2002+{[150-(26*15-95*3)*2]*3-24*5}=2002+{[150-(390-285)*2]*3-120}=
=2002+[(150-105*2)*3-120]=2002+[(150-210)*3-120]=2002+[(-60)*3-120]=
=2002+(-180-120)=2002+(-300)=1702
