Question

resolva a seguinte expressões

a) - (36 + 12 - 4 ) - [9 + 4 - ( 12 - 15 )]

b) - 4 + [-3 + 2 + (5-3 - 7 )]
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Answer 1

a)

$\mathsf{-(36+12-4)-[9+4-(12-15)]}\\\mathsf{-44-[13+3]=-44-16=-60}$

$\dotfill$

b)

$\mathsf{-4+[-3+2+(5-4-7)]}\\\mathsf{-4+[-1-6]}\\\mathsf{-4-7=-11}$