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46 = 4 x 4 x 4 x 4 x 4 x 4 = 4,096
x/(x + 4) = 4/(x + 4) + 2 (x - 4)/(x + 4) = 2 x - 4 = 2x + 8 -x = 12 x = -12
4x4x4x4x4x4=4^6 (46)
4 + x = 2x --> 4 = 2x - x --> 4 = x: x = 4