Respuesta :

Answer:

d = - [tex]\frac{1}{4}[/tex]

Step-by-step explanation:

the common difference d is the difference between consecutive terms , so

d = a₂ - a₁ = [tex]\frac{1}{4}[/tex] - [tex]\frac{1}{2}[/tex] = - [tex]\frac{1}{4}[/tex]