#!/usr/bin/env python
from __future__ import (absolute_import, division, print_function, unicode_literals)

a = 9
b = 12
c = 3
x = a -b / 3 + c * 2 -1
y = a -b / (3 + c) * (2 -1)
z = a - (b / (3 +c) * 2) -1

print( "X = ", x)
print ("Y = ", y)
print ("Z = ", z)
