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3pangkat2x-1 = 3 pangkat9x-15
2x-1 = 9x-15
-1+15 = 9x-2x
14 = 7x
x = 14/7
x = 2
2x-1 = 3(3x-5)
2x-1 = 9x-15
2x-9x = -15+1
7x = 14
x = 2