Question

помогите,буду благодарна)))
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Answer 1

$x-\frac{x}{12} =\frac{55}{12} \\\\\frac{12x}{12} \frac{x}{12} =\frac{55}{12} \\\\\frac{12x-x}{12} =\frac{55}{12} \\\\\frac{11x}{12}=\frac{55}{12} \\11x=55\\x=5$