Explicación paso a paso:
3 - [ 7-2- (1-9) -3+12 ] + 2
= 3 - [7-2-1+9-3+12] + 2
= 3 - 22 + 2
= -21 + 2
= -19
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Verified answer
Explicación paso a paso:
3 - [ 7-2- (1-9) -3+12 ] + 2
= 3 - [7-2-1+9-3+12] + 2
= 3 - 22 + 2
= -21 + 2
= -19