7/1, 21/3, 14/2, and 28/4. All of these 4 fractions, when reduced, equal 7.
If you want four fractions that, when added together, equal seven, then you can have 6/3 (=2) + 12/4 (=3) + 1/1 (=1) + 2/2 (=1). The fractions then become the following whole numbers to add together 2 + 3 + 1 + 1 = 7
I wanted to show you both ways since you did not specify which way you wanted the fractions - improper fractions that are all equal to seven, or 4 fractions that when added together make seven.
Thanks for the question. Let me know if you have any questions.