a)-12 [-4+3 • (-29 -3 +421 -166)
6 -5 [28-3 (-6 +38-34)-26-05-26-3)
c) -2[-2-5 - (+ 18-13 6) -9 .(- 12 trang
g) - 120-17 +15 (+59-27-30) -21].
6) + 296 - 73 +21 (-47+11+32) - 155 Je
c)-30 + 65-37 (6e1-26 +36) 31-
- 139 (+711 - 394 (-417 - 395+24)
- 249. [-317 (-193 -222-35)-2015].
C +107 L 462-214 (6064332 +285)3 =
(6) +2 (+5 [-28-2 (-19 +6 -17)]- 23 )
65 (+3 (36+ 7 (-36+2 -35)]- 34) =
0-6(-7 -13 +3 (+13 - 19+8)]-19)​