Odpowiedź:
Szczegółowe wyjaśnienie:
[tex]\frac{3}{5} = \frac{x}{5 + 7} \\\\\frac{3}{5} = \frac{x}{12} \\\\\\5x = 36[/tex] // ÷5
[tex]x = \frac{36}{5} \\\\x = 7\frac{1}{5}[/tex]
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Odpowiedź:
Szczegółowe wyjaśnienie:
[tex]\frac{3}{5} = \frac{x}{5 + 7} \\\\\frac{3}{5} = \frac{x}{12} \\\\\\5x = 36[/tex] // ÷5
[tex]x = \frac{36}{5} \\\\x = 7\frac{1}{5}[/tex]