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=3 pangkat 7 x 7 pangkat 3 x 2/7 pangkat 3 x 3 pangkat 3 x 2 pangkat 3
=3 pangkat 4 x 2 pangkat -2
=3 pangkat 4 x 1/2 pangkat 2
=81 x 1/4=81/4
= 2x3^7 x 7^3 / 2^3 x 3^3 x 7^3
= 3^4/3^2 = 81/4