That all depends on the angle between the two forces.
It could be anything between 1.3 m/s² in the direction of the larger force, if
they're in opposite directions, all the way around to 6.04 m/s² in the direction
of both of them if they're both in the same direction.
That includes magnitudes between 1.3n and 6.04n directed somewhere between
the two forces if they're in different, unrelated directions.