def scale_mnist_data(train_images, test_images):
    """
    This function takes in the training and test images as loaded in the cell above, and scales them
    so that they have minimum and maximum values equal to 0 and 1 respectively.
    Your function should return a tuple (train_images, test_images) of scaled training and test images.
    """
    train_images = train_images/255.0
    test_images =test_images/255.0
    return (train_images, test_images)