$Đáp$ $án$ $+$ $Giải$ $thích$ $các$ $bước$ $giải$ $:$

 $62$ $:$ ( $5x$ $+$ $12$ ) $=$ $1$

$\Leftrightarrow$ $5x$ $+$ $12$ $=$ $62$ $:$ $1$

$\Leftrightarrow$ $5x$ $+$ $12$ $=$ $62$

$\Leftrightarrow$ $5x$ $=$ $62$ $-$ $12$

$\Leftrightarrow$ $5x$ $=$ $50$

$\Leftrightarrow$ $x$ $=$ $50$ $:$ $5$

$\Leftrightarrow$ $x$ $=$ $10$

 $Vậy$ $x$ $=$ $10$

@namlebao

    Chúc cậu học giỏi nha, PLS câu trả lời hay nhất.