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\(\text{y:0,125+y:0,5+y=9,9}\)
\(y:\left(0,125+0,5+1\right)=9,9\)
\(y:\frac{13}{8}=\frac{99}{10}\)
\(y=\frac{99}{10}.\frac{13}{8}\)
\(y=\frac{1287}{80}\)
học tốt
![](https://rs.olm.vn/images/avt/0.png?1311)
1/2 : 0,5 - 1/4 : 0,25 + 1/8 : 0,125 - 1/10 : 0,1
= 1 - 1 + 1 - 1
= 0 + 0
= 0
1/2 : 0.5 - 1/4 : 0.25 + 1/8 : 0.125 - 1/10 : 0.1
= 1 - 1 + 1 - 1
= 0 + 0
= 0
![](https://rs.olm.vn/images/avt/0.png?1311)
\(y\div0,125+y\div0,5+y=9,9\)
\(\Leftrightarrow y\times8+y\times2+y=9,9\)
\(\Leftrightarrow y\times\left(8+2+1\right)=9,9\)
\(\Leftrightarrow11y=9,9\)
\(\Leftrightarrow y=0,9\)
Trả lời:
y : 0,125 + y : 0,5 + y = 9,9
y : 0,125 + y : 0,5 + y : 1 = 9,9
y : ( 0,125 + 0,5 + 1 ) = 9,9
y : 1,625 = 9,9
y = 9,9 x 1,625
y = 16,0875. Vậy y = 16,0875
![](https://rs.olm.vn/images/avt/0.png?1311)
y + y : 0,5 + y : 0,25 + y : 0,125 = y + 2y + 4y + 8y = 15y = 15 => y = 15 : 15 = 1
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\(\Rightarrow\)(20.16+12x16-48.4):64=(16.(20+12)-192):64=(16.32-192):64=320:64=5
mình có cách ngắn hơn nhưng khó hiểu lắm nên tích đúng cho mình nha
![](https://rs.olm.vn/images/avt/0.png?1311)
x + x/0,25 + x/0,5 + x/0,125 = 0,45
<=> x + x( 1/0,25 + 1/0,5 + 1/0,125 ) = 0,45
<=> x + x( 4 + 2 + 8 ) = 0,45
<=> x + 14x = 0,45
<=> 15x = 0,45
<=> x = 0,45 : 15
<=> x = 0,03
~~~~~Hok tốt~~~~~
![](https://rs.olm.vn/images/avt/0.png?1311)
Câu 1 : \(0,36\times630+0,6\times36\times6+3,6\)
\(=0,36\times10\times63+0,6\times6\times36+3,6\)
\(=3,6\times63+3,6\times36+3,6\)
\(=3,6\times\left(63+36+1\right)\)
\(=3,6\times100\)
\(=360\)
Câu 2 :\(3,5\times20,2+6,5\times27,9+3,5\times2,2-6,5\times5,5\)
\(=3,5\times\left(20,2+2,2\right)+6,5\times\left(27,9-5,5\right)\)
\(=3,5\times22,4+6,5\times22,4\)
\(=22,4\times\left(3,5+6,5\right)\)
\(=22,4\times10\)
\(=224\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có : y : 0.125 + y : 0.5 + y = 9.9
y × 8 + y × 2 + y = 9.9
y × ( 8 + 2 + 1 ) = 9.9
y × 11 = 9.9
y = 9.9 : 11
y = 0.9
Vậy y = 0.9
# chúc bạn học tốt #
y:0,125+y:0,5+y=9,9
yx8+yx2+yx1=9,9
yx(8+2+1)=9,9
yx11=9,9
y=9,9:11
y=0,9