1) 45*16 + 26 + 17*16 - 78*16 = 16(45 + 17 - 78) + 26 = 16*(-16) +26 = -256 + 26 = -230
2)83*3 - 35*3 + 16*3 + 36*3 = 3(83 - 35 + 16 + 36) = 3*100 = 300
3)16*5*21 + 14*2*21 - 100*21 = 21(16*5 + 14*2 - 100) = 21 * 8 = 168
1) 45*16 + 26 + 17*16 - 78*16 = 16(45 + 17 - 78) + 26 = 16*(-16) +26 = -256 + 26 = -230
2)83*3 - 35*3 + 16*3 + 36*3 = 3(83 - 35 + 16 + 36) = 3*100 = 300
3)16*5*21 + 14*2*21 - 100*21 = 21(16*5 + 14*2 - 100) = 21 * 8 = 168