The age difference between Taehyung and his mother is 31 years, and the age difference between Taehyung and his younger brother is 5 years. If Taehyung's younger brother is 7 years old this year, how old is his mother?
7 5 [OP_ADD] 31 [OP_ADD]
var_a = 7
var_b = 5
var_c = var_a + var_b
var_d = 31
var_e = var_c + var_d
print(int(var_e))