The forces are still parallel to each other, hence, the resultant force is still the arithmetic sum of individual forces, but with the forces being positive or negative taken into consideration. If the sum is positive, then the direction of the resultant force is to the right. If the sum is negative, then the direction of the resultant force is to the left. Therefore, the resultant force acting on the object has a magnitude of 5 N with a direction towards the right.