U5 =a + (5-1)b= 19
a + 4b = 19
U7= a +(7-1)b= 27
a + 6b = 27
___________ -
-2b= -8
b = (-8)/2=4
mencari a
a + 4b =19
a + 4.4 = 19
a + 16= 19
a = 19-16 =3
mencari U6
U6 = a + (n-1)b
3 +(6-1) 4
3 + 5.4
3 + 20
23
Jadi a = 3 dan U6 = 23
# ^^
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U5 =a + (5-1)b= 19
a + 4b = 19
U7= a +(7-1)b= 27
a + 6b = 27
a + 4b = 19
a + 6b = 27
___________ -
-2b= -8
b = (-8)/2=4
mencari a
a + 4b =19
a + 4.4 = 19
a + 16= 19
a = 19-16 =3
mencari U6
U6 = a + (n-1)b
3 +(6-1) 4
3 + 5.4
3 + 20
23
Jadi a = 3 dan U6 = 23
# ^^