Question

4+{4-9-[9+4-(3+6)-5]+3}

3-{5-[-9-7-(5-4-3)]}
ayuda
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Answer 1

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4+{4-9-[9+4-(3+6)-5]+3}

=4+−5−(9+4−(3+6)−5)+3

=4−5−(13−(3+6)−5)+3

=4−5−(13−9−5)+3

=4−5−(4−5)+3

=4−5−(−1)+3

=4+−4+3

=4+−1

=3

3-{5-[-9-7-(5-4-3)]}

=3−(5−(−16−(5−4−3)))

=3−(5−(−16−(1−3)))

=3−(5−(−16−(−2)))

=3−(5−(−14))

=3−19

=−16