3b + 9 = 2 (h – b) nilai b = By Admin ReiPosted on October 29, 2022 3b + 9 = 2 (h – b) nilai b = 3b + 9 = 2 (h – b) 3b + 9 = 2h – 2b3b + 2b = 2h – 95b = 2h – 9b = 2h/5 – 9/5