$426$ - $x$ × $5$ = $512$ × $2$
$426$ - $x$ × $5$ = $1024$
$426$ - $x$ = $1024$ : $5$
$426$ - $x$ = $204,8$
$x$ = $426$ - $204,8$
$x$ = $221,2$
$91272$ - $x$ × $5$ = $4522$
$91272$ - $x$ = $4522$ : $5$
$91272$ - $x$ = $904,4$
$x$ = $91272$ - $904,4$
$x$ = $95367,6$
$x$ × $5$ - $1291$ = $3193$
$x$ × $5$ = $3193$ - $1291$
$x$ × $5$ = $1902$
$x$ = $1902$ : $5$
$x$ = $380,4$
$x$ × $2$ + $13925$ : $5$ = $27,33$
$x$ × $2$ + $13925$ = $27,33$ × $5$
$x$ × $2$ + $13925$ = $136,65$
$x$ + $13925$ = $136,65$ : $2$
$x$ + $13925$ = $68,325$
$x$ = $68,325$ - $13925$
$x$ = $-13856,675$
$Câu 4 thiếu đề$
# no copy
Xin hay nhất
