" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
x+y = 33
x-y = 7
-------------- -
2y = 26
y = 13
x = 13+7 = 20
x+3+y+3 = 20+3+13+3 = 39 tahun