First convert to an improper fraction: -5 2/7 = -37/7 -2 1/7 = -15/7 So now you have -37/7 / -15/7 When you divide with a fraction, you just flip the numerator and denominator of the divisor and multiply instead, so -37/7 * -7/15 = 37/15 which would be in "improper" form. To convert it to mixed number form it would be 2 7/15