No matter the number, if it has a neg. sign it’s smaller then a positive number. 16 is bigger then 8. 3/16 is smaller then 7/4, because of the negative sign and 3 is smaller than 7.
When looking at fractions, a larger denominator means that the numerator is divided by a larger amount, making it smaller. 7/4 is positive, so we already know it goes last. -3/16 has a larger denominator than -3/8, but in this case, because -3/16 is closer to zero. This means that in order, these fractions would be -3/8, -3/16, 7/4. Hope this was helpful.