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a) x + y = 2(x - y)..|
b) x = 2y + 6.........|
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a) [2y + 6] + y = 2([2y + 6] - y)
2y + 6 + y = 2(2y + 6 - y)
3y + 6 = 2(y + 6)
3y + 6 = 2y + 12
3y - 2y = 12 - 6
Y= 6
b) x = 2y + 6
x = 2[6] + 6
x = 12 + 6
X= 18
Solución: Los números son 18 y 6.
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