Question

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Answer 1

Olá,

$\tt \: \dfrac{1}{7} = \dfrac{x - 6}{49} \\ \\ \tt \: 7(x - 6) = 49 \\ \\ \tt \: 7x - 42 = 49 \\ \\ \tt7x = 49 + 42 \\ \\ \tt \: 7x = 91 \\ \\ \tt \: x = \frac{91}{7} \\ \\ \tt \: x = 13 \: \checkmark$