Răspuns:
1.a) 72-21:(35-4×8)
72-21:(35-32)
72-21:3
72-7
65
(27+164:2)-7×8
(27+82) - 56
109-56
53
b)[(408 : 2 + 100 : 2) × 4 - 65×3] ×270
[(204+50)×4-195]×270
(254×4-195)×270
(1016-195)×270
821×270
221670
3×[(80 : 4) + (125 : 5 - 5)] + 404 : 4
3×(29+20)+101
3×49+101
147+101
248
2. [680:20+4×(2+12:12)]×100
(34+4×3)×100
(34+12)×100
4600
IULIAN A LUCRAT CORECT
