Take -3/7 and -2/3 subtract them.
(-3/7) - (-2/3) find a common denominator and alter fractions based on it.
-9/21 - (-14/21)........keep change change
-9/21 + (14/21) = 5/21 is the distance between both fractions. Remember distance is always positive.
Subtraction is typically used to measure the distance between two numbers, such as the range. The range is the distance between the biggest and smallest numbers in a data set.