You can't.
link cable
Pokemon Gold and Silver are gameboy colour games. If you want to trade Pokemon between them you must have two gameboy colours and a gameboy colour link cable.
I don't think you can because 'Pokemon silver' game cartridge is bigger than 'Pokemon ruby' and so you couldn't do it.* *because the cable to trade, is a long thingy, whereas a ruby game cable is a semi- circle thingy.
If you're using a DS, you can do Wireless Trade Local or WiFi. But if you're using a Gameboy, you can't trade without a trade cable.
No silver is not compatible with firered.
you do trade!
no
You can't, you must trade from Emerald (which had an event to get to Mew), or trade from Pokemon Ranch (if you unlocked it).
actually i dont want to say this but NO
you trade a Pokemon from either silver or gold to crystal using a link cable for your gameboy.
if you have a Pokemon on silver that isn't on red it than can't trade. Or if there is a new move/TM that your Pokemon knows it won't work oh and you have to use the time machine to trade(the big thing at the far end of the Pokemon center, upstairs).
All you do is hook up the link cable and go to the PC's in both games and go to the trade side and trade! Easy Huh?