para. sumar. o restar. fracciones. con. igual. denominador. se. suman. se. resta. los. numeradores. y. se. deja. el. mismo. denominador​

Bag of bolts weight 29.4n

Golf is for old men who smell

Is there any opitions? if you have the periodic table, the noble gases are 8a family, the halogen are the 7a family, and the nonmetal are  carbon, nitrogen, phosphorus, oxygen, sulfur, selenium, fluorine, chlorine, bromine, iodine and astatine.