4. u.fatimah = F u.Ainuin = A F = A+A F - A = 6 ( A+A ) - A = 6 A = 6 ( u . Aiunun) F-A = 6 F-6 = 6 F = 6+6 F = 12 (u.fatimah) 5. kotak pena (K) = 2 Buku tulis (B) = 5 2K + 5B 42