mariaeduarda021
mariaeduarda021 mariaeduarda021
  • 12-02-2021
  • Mathematics
contestada

QUESTÃO 18
Observe as igualdades:
1) 6 - (-1) = + 7
II) - 30 - (-1) = - 31
III) 40 - 50 = -(40 - 50)
IV)-7-(-7) = 0
Quantas delas são verdadeiras?
a) 0
b) 1
c) 2
d) 3
e) 4​

Respuesta :

joshua147826
joshua147826 joshua147826
  • 12-02-2021
52)637
72}nd772/-66277
-/626
Answer Link
anton1a anton1a
  • 12-02-2021

I think c) is right but I am nor really sure

Answer Link

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