Question

Resolva (-19).(-20)

Resolva (-25).(+12)

Calcule (+100) / (-20

Resolva (-24) (+7) / (+4)

Calcule (+25) / (+5)








Alguém???????????
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Answer 1

Resposta:

-380,-300,-50,+4.2,+5

Explicação:

(-19).(-20)

 -19.-20

   -380

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obs: (+) . (+) = (+) /// (+) . (–) = (–)

(-25).(+12)

-25.+12

   -300

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obs: (+) : (+) = (+) /// (+) : (–) = (–)

(+100) / (-20)

+100/-20

     -50

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(-24) (+7) / (+4)

   -24+7/+4

      +4.2

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(+25) / (+5)

 +25/+5

     +5