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Y : 3,75 = 2,37 + 2,67.
Y : 3,75 = 5,04
Y = 5,04 x 3,75
Y = 18,9
8,3 - Y = 2,5 x 1,06
8,3 - Y = 2,65
Y = 8,3 - 2,65
Y = 5,65
Y : 6,2 = 20 - 5,06
Y : 6,2 = 14,94
Y = 14,94 x 6,2
Y = 92,628
Y : 3,75 = 2,37 + 2,67
Y : 3,75 = 5,04
Y=5,04 x 3,75
Y= 18,9
Vậy Y= 18,9
8,3 - Y = 2,5 X 1,06
8,3 - Y = 2,65
Y=8,3 - 2,65
Y=5,65
Vậy Y=5,65
Y : 6,2 = 20 - 5,06.
Y : 6,2 =14,94
Y=14,94 X 6,2
Y=92,628
Vậy Y=92,628
![](https://rs.olm.vn/images/avt/0.png?1311)
\(y+y:5=12,6\)
\(y\times\left(1+\dfrac{1}{5}\right)=12,6\)
\(y\times\dfrac{6}{5}=12,6\)
\(y=12,6:\dfrac{6}{5}\)
\(y=\dfrac{21}{2}\)
`@` `\text {Ans}`
`\downarrow`
`y + y \div 5 = 12,6`
`=> y + y/5 = 12,6`
`=> (5y)/5 + y/5 =12,6`
`=> (5y+y)/5 = 12,6`
`=> (6y)/5 = 12,6`
`=> 6y = 12,6 \times 5`
`=> 6y = 63`
`=> y = 63 \div 6`
`=> y = 10,5`
Vậy, `y = 10,5.`
![](https://rs.olm.vn/images/avt/0.png?1311)
\(a.\left(y.100-0,7357\right):0,01=0,55+15,88\)
\(\Leftrightarrow\left(100y-0,7357\right):0,01=16,43\)
\(\Leftrightarrow100y-0,7357=0,1643\)
\(\Leftrightarrow100y=0,9\)
\(\Leftrightarrow y=\frac{9}{1000}\)
\(b.14:\left(0,4+\frac{0,16}{y}\right)=7\)
\(\Leftrightarrow0,4+\frac{0,16}{y}=2\)
\(\Leftrightarrow\frac{0,16}{y}=1,6\)
\(\Leftrightarrow x=0,1\)
\(c.520+7,5.4=y+\frac{175}{5}+30\)
\(\Leftrightarrow520+30=y+65\)
\(\Leftrightarrow550=y+65\)
\(\Leftrightarrow y=485\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(y:10+y.3,9=4,8\)
\(\Rightarrow y.0,1+y.3,9=4,8\)
\(\Rightarrow y.\left(0,1+3,9\right)=4,8\)
\(\Rightarrow y.4=4,8\)
\(\Rightarrow y=1,2\)
Vậy y = 1,2
b) \(y.2,5+y.7,5=12,8\)
\(\Rightarrow y.\left(2,5+7,5\right)=12,8\)
\(\Rightarrow y.10=12,8\)
\(\Rightarrow y=1,28\)
Vậy y = 1,28
![](https://rs.olm.vn/images/avt/0.png?1311)
y x 125 + y x 876 - y x 1 = 126722
y x (125 + 876 - 1) = 126722
y x 1000 = 126722
y = 126,722
~hok tot~
Y x 125 + Y x 876 - Y = 126722
=> Y( 125 + 876 - 1 ) = 126722
=> 1000Y = 126722
=> Y = 126,722
11,5 x y + 7,5 x y + y = 30
( 11,5 + 7,5 + 1 ) x y = 30
20 x y = 30
y = 30 : 20
y = 1,5
bạn ơi sao mình nhập 1.5 vào mà nó cứ nhân sai ko ra 30