Aflați x din raportul:
[tex] \frac{8}{15} \times ( \frac{1}{5} + x \times ( 1 \times \frac{1}{3} - 1 \times \frac{1}{5} )) \times 1 \times \frac{2}{3} \: \: \: totul \: supra \: 2.1(3) \: = \: \frac{ {16}^{8} }{ {8}^{10} } [/tex]
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