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2a +7b = 29
u7 = a+6b = 22
2a + 12b = 44
2a+7b=29
2a+12b = 44
--------------- -
-5b = -15
b= 3
a+6b = 22
a+ 18= 22
a= 4
u11= a+10b = 4+30 = 34
U3 + U6 = 29
a + 2b + a + 5b = 29
2a + 7b = 29
U7 = 22
a + 6b = 22
kalikan 2 = 2a + 12b = 44
eliminasikan
2a + 12b = 44
2a + 7b = 29 -
5b = 15
b = 3
cari suku awal
a + 6b = 22
a + 6(3) = 22
a + 18 = 22
a = 22-18
a = 4
maka
U11 = a + (11-1)b
U11 = 4 + (10 x 3)
U11 = 4 + 30 = 34