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U5 = a + 4b = 20
U8 = a + 7b = 32
Metode Eliminasi
a + 4b = 20
a + 7b = 32 _
-3b = -12
b = -12/-3
b = 4
Masukkan b
a + 4b = 20
a + 4(4) = 20
a + 16 = 20
a = 20 - 16
a = 4
Sehingga
U17 = a + (17 - 1)b
U17 = 4 + (16)4
U17 = 4 + 64
U17 = 68
Semoga membantu . . .
= 4+16x4
= 68
mencari a dan b menggunakan eliminasi dan substitusi
ada yg kurang paham boleh ditanyakan