Question

помогите,буду благодарна)))
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Answer 1

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