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27 = 14
jad bil. pertm adlah 27
dan bil. kedua adalah 14
9n(3n+2) = 7n(4n+2)
27n^2 + 18n = 28n^2 + 14n
18n - 14n = 28n^2 - 27n^2
4n = n^2
4n = nxn
4n/n = n >> n= 4
3x4=12 dan 4x4=16
jadi, 12x16 = 192