Yes you can. Make them look nice.
They don't all have seven loops. I have jeans and slacks with 5 loops and also 7 loops. I also have slacks with no belt loops. However, I prefer pants with 7 belt loops because they stay up better, especially if you have anything heavy in your pockets or on your belt.
Typically, suspenders are adjustable and not sewn on. Many times, the ends of the suspenders feature buttonholes or loops to be secured to buttons that are attached inside the waistband of the garment. The suspenders can be made adjustable with belt buckles and holes for adjusting length.
No, one or the other since they do the same thing, generally you use suspenders if your pantss do not have belt loops. However, someone could wear both as a personal preference. No, if you will wear suspenders only, and belts only. Visit Hold Up Suspenders Co. for more info about suspenders.
No. Only suspenders ("braces" in the U.K.) are acceptable with a tuxedo. They should be the button-on variety, as clip-on suspenders will damage the pants. Black or white silk are the most classic. Even if one wanted to, tuxedo pants do not come with belt loops. == == == ==
Centered on the waistband, front and back, and centered on the center seam in the back, then about a hand-width from the fly on the front. If there are belt loops, either side of the back center loop, and either side of the frontmost loops.
A belt and suspenders is a system of redundant systems with mutual backup in the event of one failing.
Belt Loops.
You would want to dress appropriately for the place where you work. If you work primarily in an office, you would want to dress wear slacks (with some room to move) with a belt and button down shirt.
Punk is about being how you are. If you feel comfortable in a spiked belt and suspenders with the rest of the outfit, then go ahead.
Marine Corps dress blues have two on the jacket, and seven on the trousers. There are seven on the pants and they represent the seven seas. - Nyxos
He wears a white shirt over his Camp-Half Blood one, suspenders, his signature magic belt, and boots. Black pants too.
* Unless the bride to be has printed 'casual' on her invitations (example: garden wedding with BBQ to follow) then no, all weddings, no matter what time of the day or evening are generally formal weddings and one should dress to fit the occasion. For the men it could be a pair of nice dress slacks, belt, shirt and tie and a sports jacket. For the women it can be dress slacks, nice top and a jacket (or no jacket) to a skirt or dress.