Question

Resolva:
A) 10+[-8-(-1+2)]=
B) -3-[8+(-6-3)+1]=
C) 8-(4+5)-[3-(6-11)]=
D) -(-2)-[9+(7-3-6)-8]=
com calculo por favor, obg

Answer 1

A)
= 10 + [ - 8 - ( - 1 + 2)]
= 10 + [ - 8 - ( 1)]
= 10 + [ - 8 - 1]
= 10 + [-9]
= 10 - 9
= 1

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B)
= - 3 - [8 + ( - 6 - 3) + 1]
= - 3 - [ 8 + ( - 9) + 1]
= - 3 - [ 8 - 9 + 1]
= - 3 - [ - 1 + 1]
= - 3 - [ 0]
= - 3

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C)
= 8 - (4 + 5) - [3 - (6 - 11)]
= 8 - ( 9) - [ 3 - ( - 5)]
= 8 - 9 - [ 3 + 5]
= - 1 - [ 8]
= - 1 - 8
= - 9

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D)
= -(-2)-[9+(7-3-6)-8]
= + 2 - [ 9 + (4 - 6) - 8]
= 2 - [ 9 + (-2) - 8]
= 2 - [9 - 2 - 8]
= 2 - [ 9 - 10]
= 2 - [ - 1]
= 2 + 1
= 3

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