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15032002
@15032002
January 2020
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RESOLVA ESSE SISTEMA: Y=X\2-3 E X=Y\2+3
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PauloBarros
Verified answer
Y = x - 3
-----
2
2y = x - 6
---- --------
2 2
2y = x - 6
6 = x - 2y
x - 2y = 6
x = y + 3
-----
2
2x = y + 6
---- ---------
2 2
2x - y = 6
x - 2y = 6
2x - y = 6 (-2)
x - 2y = 6
- 4x + 2y = - 12 (+)
-------------------------
- 3x = - 6 (-1)
3x = 6
x = 6/3
x = 2
2x - y = 6
2.2 - y = 6
4 - y = 6
4 - 6 = y
- 2 = y
y = - 2
R.: x = 2 e y = - 2
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Verified answer
Y = x - 3-----
2
2y = x - 6
---- --------
2 2
2y = x - 6
6 = x - 2y
x - 2y = 6
x = y + 3
-----
2
2x = y + 6
---- ---------
2 2
2x - y = 6
x - 2y = 6
2x - y = 6 (-2)
x - 2y = 6
- 4x + 2y = - 12 (+)
-------------------------
- 3x = - 6 (-1)
3x = 6
x = 6/3
x = 2
2x - y = 6
2.2 - y = 6
4 - y = 6
4 - 6 = y
- 2 = y
y = - 2
R.: x = 2 e y = - 2