Zoe gives 7 shells to Dev, leaving her with 48. Dev then has 16 shells in total. Step-by-step explanation: Denote the initial shell count for Dev as A and Zoe’s as B. Based on the scenario where Zoe transfers x shells to Dev while then possessing three times the number of shells relative to him, the resulting references show that Zoe provided 7 shells, leaving her count at 48 while Dev's total became 16.
Answer:
y = x - 3
Step-by-step explanation:
4x - 5 = 7 + 4y subtracting 7 from each side
4x - 12 = 4y
then dividing every term by 4
x - 3 = y