Question

matemática
$10x + 7 = 127$
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Answer 1

$\sf 10x + 7 = 127 \\\sf 10x = 127 - 7 \\\sf 10x = 120 \\\ \frac{10x}{10} = \frac{120}{10} \\\sf x = \frac{120}{10} \\\sf  \color{green}{x = 12}$

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