You have 30 cats and 18 dogs each. The combined number of dogs and cows is 4 fewer than the number of cats. How many cows do you have?
45 32 [OP_SUB] 8 [OP_SUB]
var_a = 45
var_b = 32
var_c = var_a - var_b
var_d = 8
var_e = var_c - var_d
print(int(var_e))