Don L. answered • 12/12/15
Tutor
5
(18)
Fifteen years teaching and tutoring basic math skills and algebra
Hi Jay, to find the common difference we need to find the difference between each pair of values.
Difference between 1 / 4 and 1 is 3 / 4, since 1 can be written as 4 / 4.
Difference between 1 and 7 / 4 is 3 / 4, since 1 can be written as 4 / 4.
Difference between 7 / 4 and 10 / 4 is 3 / 4.
The common difference is 3 / 4.
Questions?
