Given : m represents the number of men at the club
It means - Total number of men at the club are : m
Given : There are four more women than men at the club
It means - Total number of women at the club are 4 more than men
Total number of women at the club are : m + 4
Total number of men and women at the club are :
Total number of men + Total number of women
m + (m + 4)
m + m + 4
4 + 2m