Question

EliminaNão os parênteses e colchetes determine o valor de
30+[-16-(-7+10)]
-10-[11+(-10-6)+1]
18-(14+15)- [13 -16-21)]

Answer 1

30+[-16-(-7+10)]

30+[-16-(+3)] ==> 30+[-16-3] ==> 30 - 19 ==> + 11
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-10-[11+(-10-6)+1]

-10-[12+(-16)] ==> -10-[12 -16] ==> 10+4 ==> 14
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18-(14+15)- [13 -16-21)]

18-29- [-24)] ==> - 11+ 24 ==> + 13