{ [ 6.x-72] ;2-84} . 28= 5628. tim sô tu nhien x
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
`= 72 xx 19 + 36 xx 2 xx3 xx 10 + 72 xx 80 - 72 xx 29`
`= 72 xx(19 + 30 - 29 + 80)`
`= 72 xx 100`
`= 7200`
\(=72.19+36.2.3.10+72.2.40-72.29\)
\(=72.19+72.30+72.80-72.29\)
\(=72.\left(19+30+80-29\right)\)
\(=72.100=7200\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{92}{6}\times\dfrac{72}{15}:\left(-\dfrac{72}{10}\right)\)
\(=\dfrac{92\times72}{6\times15}:\left(-\dfrac{72}{10}\right)\)
\(=\dfrac{368}{5}:\left(-\dfrac{72}{10}\right)\)
\(=\dfrac{368}{5}\times\dfrac{-10}{72}\)
\(=\dfrac{368\times\left(-10\right)}{5\times72}\)
\(=\dfrac{-92}{9}\)
\(=\dfrac{92}{6}\cdot\dfrac{72}{15}\cdot\dfrac{-10}{72}=\dfrac{92}{6}\cdot\dfrac{-2}{3}=\dfrac{-92}{9}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a: =24*1000=24000
b: =120*1000=120000
c: =72(135+65):25-140
=72*8-140=436
d: =18(957-354-621):72=-9/2
![](https://rs.olm.vn/images/avt/0.png?1311)
9 x 6 = 54 9 x 7 = 63 9 x 5 = 45 9 x 8 = 72
54 : 9 = 6 63 : 9 = 7 45 : 9 = 5 72 : 9 = 8
54 : 6 = 9 63 : 7 = 9 45 : 5 = 9 72 : 8 = 9
9 x 6 = 54 9 x 7 = 63 9 x 5 = 45 9 x 8 = 72
54 : 9 = 6 63 : 9 = 7 45 : 9 = 5 72 : 9 = 8
54 : 6 = 9 63 : 7 = 9 45 : 5 =9 72 : 8 =9
![](https://rs.olm.vn/images/avt/0.png?1311)
9 x 5 = 45
9 x 6 = 54
9 x 7 = 63
9 x 8 = 72
45 : 9 = 5
54 : 9 = 6
63 : 9 = 7
72 : 9 = 8
45 : 5 = 9
54 : 6 = 9
63 : 7 = 9
72 : 8 = 9
![](https://rs.olm.vn/images/avt/0.png?1311)
1368+216×10+576+2088
1368+2160+576-2088
3528+576-2088
4104-2088
2016
![](https://rs.olm.vn/images/avt/0.png?1311)
72 ÷ x + 180 ÷ x = 6
( 72 + 180 ) ÷ x = 6
252 ÷x = 6
x = 252 ÷ 6
= 42
ta có:
72 :x+180:x =6
(72+180):x=6
252:x=6
suy ra x=42
vậy x=42
![](https://rs.olm.vn/images/avt/0.png?1311)
a) (25x32) : 8
= 25 x (4 x 8) : 8
= (25 x 4) x (8:8)
= 100 x 1
=100
b, 24 x 11 + 6 x 86 x 4 + 72
= 24 x 11 + (6 x 4) x 86 + 24 x 3
= 24 x 11 + 24 x 86 + 24 x 3
= 24 x (11+86+3)
= 24 x 100
= 2 400
[ 2600+ 6400]-3.x=1200