There are 60 red balls and 30 blue balls. If there are 5 more number of red balls than the number of blue and white balls combined. How many white balls are there?
60 30 [OP_SUB] 5 [OP_SUB]
var_a = 60
var_b = 30
var_c = var_a - var_b
var_d = 5
var_e = var_c - var_d
print(int(var_e))