Răspuns :
1. (8143-314*10-318*3)*2-14=(8143-3140-954)*2-14=4049*2-14=8098-14=8084
LA EXERCITIUL 2 NU AI INCHIS PARANTEZA ROTUNDA !!!!!
(8143-314×10-318×3)×2-14=(8143-3140-954)x2-14 = 4049x2-14 = 8098-14 = 8084
[39×(2+576:48):7+7]:17-155:31 = [39×(2+12):7+7]:17-5 = [39×(14:7)+7]:17-5 =
(39x2 + 7):17-5 = (78+7):17-5 = 85:17 -5 = 5-5 = 0