Respuesta :
3.25d and 9.75d have the same variable d so we combine them
3.25d +9.75d =13
So our answer is 13-2.65 because we cannot combine 2.65 because they are not like terms
3.25d +9.75d =13
So our answer is 13-2.65 because we cannot combine 2.65 because they are not like terms