I WILL MARK BRAINLIST, HELP PLEASE

Answer:
(13 + y) / 5
Step-by-step explanation:
Grandma Gertrude gave 13 pieces and Grandma Fien gave y pieces. The total number of pieces of jewelry can be expressed as 13 + y.
The total of 13 + y is divided among 5 Carlson sisters. This can be expressed by (13 + y) / 5.
Hope this helps!