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Verified answer
Kelas 8 MatematikaBab Barisan dan Deret Bilangan
b = (U6 - U4)/(6 - 4)
b = (171 - 102)/2
b = 69/2
b = 34,5
a = U6 - 5b
a = 171 - 5 . 34,5
a = 171 - 172,5
a = 1,5
Verified answer
Jawabu6 = 171
a + 5b = 171
u4 = 102
a+ 3b = 102
a + 5b = 171 ...kali 3
a + 3b = 102 ....kali 5
3a + 15b = 513
5a + 15b - 510 ....(-)
-2a = 3
a = - 3/2
a = - 1, 5