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SEA:
X
X + 2
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2X + 2 = 34 ===> La suma de dos números pares consecutivos.
RESOLVIENDO:
2X + 2 = 34
2X = 34 - 2
2X = 32
X =
X = 16
Ahora reemplazamos:
X = 16 ===> Número 1
16 + 2 = 18 ===> Número 2, osea Y.
Pero nos pide hallar X - 2Y, entonces:
16 - 2(18) = ?
16 - 36 = -20 ===> Respuesta
MUCHA SUERTE...!!!