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Fabianagilmara
@Fabianagilmara
November 2019
1
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Sistemas {8x/8+12y/3=0/5
{3x+2y=5
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emicosonia
Sistemas
{8x/8+12y/3=0/5
{3x+2y=5
arrumado a casa
8x/8 + 12y/3 = 0/5
1x + 4y = 0 mesmo que
x + 4y = 0
assim
{x + 4y = 0
{3x + 2y = 5
pelo MÉTODO da SUBSTITUIÇÃO
x + 4y = 0 ( isolar o (x))
x = - 4y ( SUBSTITUIR o (x))
3x + 2y = 5
3(-4y) + 2y = 5
- 12y + 2y = 5
- 10y = 5
y = 5/-10
y = - 5/10 ( divide AMBOS por 5)
y = - 1/2 ( achar o valor de (x))
x = - 4y
x = - 4(-1/2)
x = - 4(-1)/2
x = + 4/2
x = + 2
assim
x = 2
y = -1/2
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Lista de comentários
{8x/8+12y/3=0/5
{3x+2y=5
arrumado a casa
8x/8 + 12y/3 = 0/5
1x + 4y = 0 mesmo que
x + 4y = 0
assim
{x + 4y = 0
{3x + 2y = 5
pelo MÉTODO da SUBSTITUIÇÃO
x + 4y = 0 ( isolar o (x))
x = - 4y ( SUBSTITUIR o (x))
3x + 2y = 5
3(-4y) + 2y = 5
- 12y + 2y = 5
- 10y = 5
y = 5/-10
y = - 5/10 ( divide AMBOS por 5)
y = - 1/2 ( achar o valor de (x))
x = - 4y
x = - 4(-1/2)
x = - 4(-1)/2
x = + 4/2
x = + 2
assim
x = 2
y = -1/2