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2. x=5 segunda solucion
2x+18 = -4
2x = -4-18
2x = -22
X = -22/2
X = -11
X-2x = -5
-X = -5
Multiplicamos por -1 a ambos lados de la ecuación para que la X nos quede positiva.
-X = -5 /• -1
X = 5