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U11 = a+(11-10b = a+10 b = 60
U5 = a+(5-1)b = a+4b = 36
____________ -
6b = 24
b = 4
a + 4b = 36
a + (4x4) = 36
a + 16 =36
a = 36-16
a= 20
U19 = 20 + (19-1)4
= 20 + 18 x 4
= 20 + 72
= 92
U11 = 60 ---> a + 10b = 60...pers 2
U19 = ?
jwb: a + 4b = 36
a + 10b = 60 _
-6b = -24
b = 4
a + 4b = 36
a + 4.4 = 36
a + 16 = 36
a = 20
U19 = a +(n-1) b
= 20 +(19-1)4
=20 + 18.4
= 20 + 72
= 92.
klw betul jdkan jwban yg terbaik ya.. ;)
klw slh maklumi sj :)