問題
$4.75\times\bigg\{\bigg(\dfrac{3}{4}-◻︎\bigg)\div\dfrac{1}{8}\bigg\}=9\dfrac{1}{2}$
解説
$4.75\times\bigg\{\bigg(\dfrac{3}{4}-◻︎\bigg)\div\dfrac{1}{8}\bigg\}=9\dfrac{1}{2}$
$\\$
$\dfrac{19}{4}\times\bigg\{\bigg(\dfrac{3}{4}-◻︎\bigg)\times8\bigg\}=\dfrac{19}{2}$
$\\$
$\bigg(\dfrac{3}{4}-◻︎\bigg)\times8=2$
$\\$
$\dfrac{3}{4}-◻︎=\dfrac{1}{4}$
$\\$
$◻︎=\dfrac{1}{2}$より, $◻︎=\dfrac{1}{2}$となります.
