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Kaka4488
@Kaka4488
December 2019
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Qual o resultado dessa conta ?
X+3y=5
2x-y=4
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JúliaVBMaroneze
Isolando o X,
X=5-3Y
Daí você substitui
2 (5-3Y)-Y=4
10-6Y-Y=4
-7Y=4-10
-7Y=-6
Y= -6/-7
0 votes
Thanks 0
misayanemoura
X + 3y = 5 (-2)
2x - y = 4 (1)
-2x -6y = -10
2x -y = 4
-7y = -6
y = 6/7
2x -y = 4
2x -6/7 = 4
2x = 4 + 6/7
2x = 34/7
x = 34/7 / 2
x = 34/14
x = 17/7
Resposta: x = 17/7 e y = 6/7
1 votes
Thanks 1
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X=5-3Y
Daí você substitui
2 (5-3Y)-Y=4
10-6Y-Y=4
-7Y=4-10
-7Y=-6
Y= -6/-7
2x - y = 4 (1)
-2x -6y = -10
2x -y = 4
-7y = -6
y = 6/7
2x -y = 4
2x -6/7 = 4
2x = 4 + 6/7
2x = 34/7
x = 34/7 / 2
x = 34/14
x = 17/7
Resposta: x = 17/7 e y = 6/7