Jawab:
Penjelasan dengan langkah-langkah:
U8 = a + 7b = 51
U5 = a + 4b = 36
Eliminasikan :
a - a = 0
7b - 4b = 3b
51 - 36 = 15
3b = 15
b = 5
kemudian subsitusikan :
a + 4b = 36
a + 4(5) =36
a = 36 - 20
a = 16 jadi suku pertamanya 16
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Jawab:
Penjelasan dengan langkah-langkah:
U8 = a + 7b = 51
U5 = a + 4b = 36
Eliminasikan :
a - a = 0
7b - 4b = 3b
51 - 36 = 15
3b = 15
b = 5
kemudian subsitusikan :
a + 4b = 36
a + 4(5) =36
a = 36 - 20
a = 16 jadi suku pertamanya 16