" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
U2 (suku kedua) = a+ b
U3 + U4 = 25
a + 2b + a + 3b = 25
2a + 5b = 25
U7 = 23
a+6b = 23
pake eliminasi
2a + 5b = 25
a + 6b = 23 (x2)
*dikurang sehingga 2a mati
*hasilnya
-7b = -21
b =3
substitusi dengan pers. diatas : a+6(3)=23
a = 5
sehingga U11 = a+10b
5+30 = 35