Answer:
3n + 7 = 37
Step-by-step explanation:
n represents the number of guests seated at each of the large table.
There are 3 large tables.
So, total number of guests in large table = 3n
Number of guests in smaller table = 7
Hence, total number of guests = 3n + 7
But, it is given that the total number of guests = 37
Hence, 3n + 7 = 37