x_{1} is the subtraction-difference of x_{2} and x_{3} (and x_{4} etc.); x_{1 }= x_{2 - x} [ - x_{4} etc.]

Near-synonymous to selsumji, but better conveys the concept of "subtraction", as opposed to merely "addend", as well as being more convenient for lujvo. See vu'u, sumji, pilji, dilcu, frinu. Proposed rafsi: -vuj-, -vu'u-

- detcacryvu'u
- x
_{1}(number) is the number of hours (pi'e for minutes) that the timezone of location x_{2}is ahead (before, if x_{1}is negative) of location/standard x_{3} - cu'alvu'u
- x
_{1}is the absolute difference of numbers x_{2}and x_{3}; x_{1 }= |x_{2 - x}