Cześć ;-)
Obliczenia
[tex]2\frac{1}{7}\cdot1,6\cdot x=8\\\\\frac{\not15^3}{7}\cdot\frac{16}{\not10_2}\cdot x=8\\\\\frac{48}{14}\cdot x=8\\\\x=8:\frac{48}{14}\\\\x=8\cdot\frac{14}{48}\\\\x=\frac{14}{6}\\\\x=\frac{7}{3}\\\\\huge\boxed{x=2\frac{1}{3}}[/tex]
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