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Bài làm
0,9 x 95 + 1,8 x 2 + 0,9
= 0,9 x 95 + 0,9 x 4 + 0,9 x 1
= 0,9 x ( 95 + 4 + 1 )
= 0,9 x 100
= 90
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(18,5:4,6+14,8:4,6+12,7:4,6\)
\(=\left(18,5+14,8+12,7\right):4,6\)
\(=46:4,6=10\)
b) \(0,75.1,3+0,25.1,3\)
\(=\left(0,75+0,25\right).1,3\)
\(=1.1,3=\dfrac{13}{10}\)
a) \(18,5:4,6+14,8:4,6+12,7:4,6\)
\(=\dfrac{18,5}{4,6}+\dfrac{14,8}{4,6}+\dfrac{12,7}{4,6}\)
\(=\dfrac{1}{4,6}.\left(18,5+14,8+12,7\right)\)
\(=\dfrac{1}{4,6}.46=10\)
b) \(...=1,3.\left(0,75+0,25\right)=1,3.1=1,3\)
c) \(...=0:31,792=0\)
![](https://rs.olm.vn/images/avt/0.png?1311)
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792,81 x 0,25 + 792,81 x 0,75) x (11 x 9 - 900 x 0,1 - 9)
= (792,81 x 0,25 + 792,81 x 0,75) x 9 x (11 - 100 x 0,1 - 1)
= (792,81 x 0,25 + 792,81 x 0,75) x 9 x (11 - 10 - 1)
= 792,81 x 0,25 + 792,81 x 0,75) x 9 x 0
= 0
mik nghĩ là vậy bn nhé
![](https://rs.olm.vn/images/avt/0.png?1311)
= 0,35x100+0,75x(12-3:\(\dfrac{1}{4}\)) +65
=35+0,75x(12-3x4)+65
=35+65+0,75x0
=100
Ta có
[5.76+23.5x0.5]x[12.7-6.8]x[1-(0.75+0.25)]
=ghi lại x ghi lại x 0
= 0
(5,76+23,5x0,5)x(12,7-6,8)x(1-0,75-0,25)
=(5,76+23,5x0,5)x(12,7-6,8)x0
=0