Question

efetue as expressões:

A) 3 . 452 - 3 . (12+3) =

B) 3 - 17 . [ - 5+ 12 . (18 + 3) - 34 + 2 . (12 - 15) ]=

C) 39- 12 : 3 + 18 : (-3 + 12) - 42=

D) 37 + 14 - 18 : 3 + 37 : (51 - 52) + 8 . 18 - 32 : 4

E) - 48 + 38 : [ 7 . (-2) - 5 ] - [ - 2 . ( - 8 + 5 ) ] =

Answer 1

(A) 3×452-3×(12+3)

3×452- 3×15

1.356-45

1.311

(B)3-17×[-5+12×(18+3)-34+2×(12-15)]

3-17×[-5+12×21-34+2×(-3)]

3-17×[-5+12×21-34-6]

3-17×107

-14×107

-1498

(C)39-12÷3+18÷(-3+12)-42

39-12÷3+18÷9-42

39-4+2-42

35-40

-5

(D)37+14-18÷3+37÷(51-52)+8×18-32÷4

37+14-18÷3+37÷(-1)+8×18-32÷4

37+14-6+37+144-8

37+14=51

51-6=45

45+37=82

82+144=226

226-8=218

218

(E)-48+38÷[7×(-2)-5]-[-2×(-8+5)]

-48+38÷[7×(-2)-5]-[-2×(-3)]

-48+38÷(-19)-6

-48-2-6

-50-6

-56