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2 + (- (- (15) + (1) ) -2) =
2 + (- ( - 15 + 1) - 2) =
2 + (- (-14) - 2) =
2 + ( + 14 - 2) =
2 + 14 - 2 = 14 Respuesta.
17-9=8 asi es este ejercicio combinado el signo debe ser asi