Question

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19 Calcula:
a) 15 - (8 – 5 + 9 + 2)
b) 25 + 40 : 2 - [5 - (8 - 9)]
c) 2. (5 + 3) - [4 - (12 - 8)]
d) 5 + 3 - 4 - [7 - (2-5)]
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Answer 1

Respuesta:

a) 1

b) 39

c) 16

d) -6

Explicación paso a paso:

a) 15 - (8 -5 + 9 +2) = 15 - (3 + 9 + 2) = 15 - (12 + 2) = 15 - 14 = 1

b) 25 + 40 : 2 - [5 - (8 - 9)] = 25 + 40 : 2 - [5 - (-1)] = 25 + 40 : 2 - 6 = 25 + 20 - 6 = 45 - 6 = 39

C) 2 x (5 + 3) - [4 - (12 - 8)] = 2 x (5+3) - ( 4 - 4) = 2 x 8 - 0 = 16 - 0 = 16

d) 5 + 3 - 4 - [7 - (2-5)] = 5 + 3 - 4 - (7 - (-3) = 5 + 3 - 4 - 10 = 8 - 4 - 10 = 4 - 10 = -6

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