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Leandrohbh
@Leandrohbh
April 2020
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Resolva o Sistema abaixo
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Guther
- 3x + 2y = 11
4x + 3y = 8
4x = 8 - 3y
x =
8 - 3y
4
- 3 (
8 -3y
) + 2y = 11
4
- 24 + 9y
+ 2y = 11
4
- 24 + 9y + 8y
= 11
4
- 24 + 17y
= 11
4
- 24 + 17y = 11 . 4
- 24 + 17y = 44
17y = 44 + 24
17 y = 68
y = 68 : 17
y = 4
x =
8 - 3y
4
x =
8 - 3 . 4
4
x =
8 - 12
4
x = - 4 : 4
x = - 1
Resposta: x= -1, y = 4
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Lista de comentários
4x + 3y = 8
4x = 8 - 3y
x = 8 - 3y
4
- 3 (8 -3y) + 2y = 11
4
- 24 + 9y + 2y = 11
4
- 24 + 9y + 8y = 11
4
- 24 + 17y = 11
4
- 24 + 17y = 11 . 4
- 24 + 17y = 44
17y = 44 + 24
17 y = 68
y = 68 : 17
y = 4
x = 8 - 3y
4
x = 8 - 3 . 4
4
x = 8 - 12
4
x = - 4 : 4
x = - 1
Resposta: x= -1, y = 4