DIRECTIONS: What should come in place of question mark (?) in the following questions?
1072 + [{8240 + (-9213)} - {(2863 - (4329 - 2143)}] = ?
1072 + [{8240 + (-9213)} - {(2863 - (4329 - 2143)}]
=1072 + [{8240 + (-9213)} - {(2863 - 2186}]
=1072 + [{8240 + (-9213)} - 677]
=1072-1650
=-578
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