Răspuns:
a=420×34:10-28 = 14280:10-28 = 1428-28=1400
b=235×36:10-46 = 8460:10-46 = 846-46 = 800
c=104×10:20-51 = 1040:20-51 = 52-51 = 1
a+b+c = 1400+800+1 = 2200+1 = 2201
