1 (12 fluid ounce) can frozen limeade concentrate
1 (12 fluid ounce) can or bottle Mexican beer (such as Corona®)
1 (12 fluid ounce) can or bottle lemon-lime soda (such as 7-Up®)
1 cup tequila
1/2 cup triple sec
1 lime, halved
Pour limeade concentrate into a pitcher; stir to break into large chunks. Add beer, lemon-lime soda, tequila, and triple sec. Stir well. Squeeze half the lime into the margarita; cut the other lime half into wedges to garnish margarita glasses.