Diket barisan aritmatika 10,7,4,1 suku ke 27 ?? By Admin ReiPosted on December 11, 2022 Diket barisan aritmatika 10,7,4,1 suku ke 27 ?? B = -3 u27 = 10+(27-1)-3= 10+26(-3)= 10 -78= -68