عرض للطباعة
http://alnasiry.net/forums/uploaded/...1460137051.jpg
-[14,14-] 2x-3y belongs to the interval
http://alnasiry.net/forums/uploaded/...1460318711.jpg
http://i.imgur.com/qpONdOq.jpg
http://alnasiry.net/forums/uploaded/...1460406222.jpg
