Why not changing bases?

Algebra Level 5

If the real values of x which satisfy: 4log3(x2)2+logx(1/9)>1 \frac{4}{\log_3 (x^2) -2} + \log_x (1/9) > 1 are on the interval X=]a,b[ U]c,d[X = \left]a,b\right[\ U \left]c, d\right[, find the value of 3a+b+c+d. 3a+b+c+d.

Obs: a<b<c<d

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