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Nathy5
@Nathy5
March 2022
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Resolva o sistema:
{x+2y=7
x-2y=-5
2
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EllenGabriela
EllenGabriela
X=7-2y
7-2y-2y=-5
7-4y=-5
-4y=-5-7
-4y=-12
y=-12/-4
y=3
S¹= {3,1}
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natanccruz
natanccruz
1 sistema:x = 7 - 2y
colocando no segundo sistema: ( 7 - 2y ) - 2y = -5
7 -4y = -5
-4y= -5 + -7 . (-1)
y= 12 /4
y= 3
recolocando no 1 sistema; x + 2 (.3) = 7
x =7 - 6
x= 1
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