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lash
@lash
October 2020
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Resolva o sistema:
{4x-6y=0
{3x-5y=-1
2
Ver respostas
Heberwagner
Heberwagner
A) 4x - 6y = 0 => 4x = 6y => x = 6y/4 => x = 3y/2, substituindo em b):
b) 3x - 5y = -1 =>3(3y/2) - 5y = -1 => 9y/2 - 5y = -1 => (9y-10y)/2 = -1 => -y = -2 =>
y = 2
- Se x = 3y/2 e y = 2, logo:
x = 3.2/2 =>
x = 3
Essa sua resposta é de acordo com que assunto?
Nossa, eu só perguntei pq eu não entendi a sua forma de responder, mas tudo bem.
Não precisa pedir desculpas, tá tudo bem. Eu acho que eu errei na resposta, pq eu respondi de acordo com Determinantes :(
Atah! Entendi!
ReisRebeca
ReisRebeca
Determinante =
DET = 18-20
DET = -2
Determinante de X =
DETx = -6+0
DETx = -6
DETx =
DETx = 3
Determinante de Y =
DETy = 0-4
DETy = 0
DETy =
DETy = 0
P= (3,0)
Espero ter ajudado :)
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