Question

Alguem sabe ????????????​

Answer 1

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A)

-10 + (6 - 4) →

-10 + 2 = -8

R) -8

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B)

2 + (2 + 5 - 7) →

2 + (7 - 7) →

2 + 0 = 2

R) 2

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C)

-5 + (2 - 4) - (7 - 1) →

-5 +(-2) - (6) →

-7-6 → -13

R) -13

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D)

(-5 + 3) - (5 - 9) + (8 - 1) - 11 →

-2 - (-4) + 7 - 11 →

-2 + 4 + 7 - 11 →

2 + 7 - 11 →

9 - 11 = -2

R) -2

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Att: MarcosPCV