426 + x chia 3 = 512 x 2
9 1 2 7 2 – x nhân 5 = 4522
X x 5 – 1291 bằng 3193
X chia 9 + 126 =
X x 2 + 139 25 chia 5 = 27,33
426 + x chia 3 = 512 x 2 9 1 2 7 2 – x nhân 5 = 4522 X x 5 – 1291 bằng 3193 X chia 9 + 126 = X x 2 + 139 25 chia 5 = 27,33
By Ruby
$426$ – $x$ × $5$ = $512$ × $2$
$426$ – $x$ × $5$ = $1024$
$426$ – $x$ = $1024$ : $5$
$426$ – $x$ = $204,8$
$x$ = $426$ – $204,8$
$x$ = $221,2$
$91272$ – $x$ × $5$ = $4522$
$91272$ – $x$ = $4522$ : $5$
$91272$ – $x$ = $904,4$
$x$ = $91272$ – $904,4$
$x$ = $95367,6$
$x$ × $5$ – $1291$ = $3193$
$x$ × $5$ = $3193$ – $1291$
$x$ × $5$ = $1902$
$x$ = $1902$ : $5$
$x$ = $380,4$
$x$ × $2$ + $13925$ : $5$ = $27,33$
$x$ × $2$ + $13925$ = $27,33$ × $5$
$x$ × $2$ + $13925$ = $136,65$
$x$ + $13925$ = $136,65$ : $2$
$x$ + $13925$ = $68,325$
$x$ = $68,325$ – $13925$
$x$ = $-13856,675$
$Câu 4 thiếu đề$
# no copy
Xin hay nhất
Đáp án:
1794
17350
$\frac{4484}{5}$
-1378,835
Giải thích các bước giải:
(1)426+x : 3 =1024
x: 3=1024-426=598
x=598 nhân 3=1794
(2)9 1 2 7 2 – x nhân 5 = 4522
x nhân 5 =91272-4522=86750
x=86750:5=17350
(3)X x 5 – 1291 bằng 3193
X x 5=3193+1291=4484
X=4484:5=$\frac{4484}{5}$
(4)X chia 9 + 126 =
(5)X x 2 + 139 25 chia 5 = 27,33
X x 2 + 2785 = 27,33
X x 2 = 27,33 -2785 = -2757,67
X=-2757,67:2 =-1378,835
Chúc e học tốt :333