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AngelinaCastro
@AngelinaCastro
December 2019
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Responda:
{x+2y=5
{x+3y=10
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DanielS6
X + 2y = 5
x + 3y = 10
Método da Adição
x + 2y = 5 (- 1)
x + 3y = 10
- x - 2y = - 5
x + 3y = 10
y = 5
x + 3y = 10
x + 3 . 5 = 10
x + 15 = 10
x = 10 - 15
x = - 5
Método da Substituição
x + 2y = 5
x = 5 - 2y
x + 3y = 10
5 - 2y + 3y = 10
- 2y + 3y = 10 - 5
y = 5
x = 5 - 2y
x = 5 - 2 . 5
x = 5 - 10
x = - 5
x = - 5, y = 5
2 votes
Thanks 1
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Lista de comentários
x + 3y = 10
Método da Adição
x + 2y = 5 (- 1)
x + 3y = 10
- x - 2y = - 5
x + 3y = 10
y = 5
x + 3y = 10
x + 3 . 5 = 10
x + 15 = 10
x = 10 - 15
x = - 5
Método da Substituição
x + 2y = 5
x = 5 - 2y
x + 3y = 10
5 - 2y + 3y = 10
- 2y + 3y = 10 - 5
y = 5
x = 5 - 2y
x = 5 - 2 . 5
x = 5 - 10
x = - 5
x = - 5, y = 5