Resposta :
Resposta:
a) (- 4) + (+ 38) =
- 4 + 38 =
34
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b) (- 25) + (+ 25) =
- 25 + 25 =
0
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c) (- 715) + (+ 82) =
- 715 + 82 =
- 633
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d) (- 34) - (- 12) =
- 34 + 12 =
- 22
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e) - 23 + 37 =
14
Explicação passo a passo: