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(x+3,8) .6 = 24,36
=> (x+3,8)=24,36 : 6
(x+3,8)= 4,06
x= 4,06 - 3,8
x=0,26
8,64 : ( 1,48 + 3,34 ) + 6,32 bai nay sai so r
(x + 3,8) x 6 = 24,36 8,64: (1,48+3,34)+6,32 x + 3,8 = 24,36 = 8,64 : 4,82+ 6,32 x + 3,8 = 4,06 = 1,79253112+6,32 x = 4,06 - 3,8 = 8,11253112 x = 0,26
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![](https://rs.olm.vn/images/avt/0.png?1311)
a,=38,92+40,64
=79,56
b,=55,2:2,4-18,32
=23-18,32
=4,68
c,=8,64:4,8+6,32
=1,8+6,32
=8,12
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(2,23\cdot0,1+3,34:10+1:10\cdot4,43\)
\(=2,23\cdot0,1+3,34\cdot0,1+4,43\cdot0,1\)
\(=0,1\cdot\left(2,23+3,34+4,43\right)\)
\(=1\)
b) \(4,5:100+5,4\cdot0,01+1:100\cdot0,1\)
\(=4,5\cdot0,01+5,4\cdot0,01+0,1\cdot0,01\)
\(=0,01\left(4,5+5,4+0,1\right)\)
\(=0,1\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a: =20,23(15,75+85,25-1)
=20,23*100
=2023
b: =4+4=8
c: =6,48(111-1-10)=648
d: =1,25*8*0,25*4
=10
a. 20,23 x 15,75 + 20,23 x 85,25 - 20,23
= 20,23 . (15,75 + 85,25 - 1)
= 20,23 . 100
= 2023
b.0,66 + 1,2+ 3,34+2,8
= 4+4
= 8
c.111 x 6,48 -6,48 - 6,48 x 10
= 6,48 . (111 - 1 -10)
= 648
d.1,25 x 0,25 x 8 x 4
= 1,25 . 8 . 0,25 . 4
= 10
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
8,64 : (1,46 + 3,34) + 6,32
= 8,64 : 4,8 + 6,32
= 1,8 + 6,32
= 8,12
x - 14,66 = 3,34
x = 3,34 + 14,66
x = 18
~ HT ~