Tìm y : Y+1/3=2/9+y=2/7=252
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\(y+y.\frac{1}{3}:\frac{2}{9}+y:\frac{2}{7}=252\)
=>\(y.\frac{2}{2}+y.\frac{3}{2}+y.\frac{7}{2}=252\)
=>\(y.\left(\frac{2}{2}+\frac{3}{2}+\frac{7}{2}\right)=252\)
=>\(y.6=252\)
=>y=252:6
=>y=42
![](https://rs.olm.vn/images/avt/0.png?1311)
y + y.1/3 : 2/9+y:2/7=252
=> y + y.1/3.9/2 + y.7/2=252
=> y + 2y + y(7/2)=252
=>y(1+2+7/2)=252
=>y.13/2=252
=>y=252.2/13=
=>Y+Y.1/3.9/2+Y.7/2=252
=>Y+3/2.Y+7/2.Y=252
=>Y(1+3/2+7/2)=252
=>Y.(2/2+3/2+7/2)=252
=>6Y=252
=>Y=4
VẬY Y=42
![](https://rs.olm.vn/images/avt/0.png?1311)
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![](https://rs.olm.vn/images/avt/0.png?1311)
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để mk dịch trước cho các bạn làm cho dễ nha, hơi hại não tí
tìm y
y + y x 1/3 : 2/9 + y : 2/7 = 252
là vậy đúng ko
y + y x 1/3 : 2/9 + y : 2/7 = 252
y x 1 + y x 1/3 : 2/9 + y : 2/7 = 252
y x 1 + y x 1/3 x 9/2 + y x 7/2 = 252
y x ( 1 + 1/3 + 7/2 ) x 9/2 = 252
y x ( 1 + 1/3 + 7/2 ) = 252 : 9/2
y x ( 1 + 1/3 + 7/2 ) = 9/504
y x 26/6 = 9/504
y = 9/504 : 26/6
y = 3/728
![](https://rs.olm.vn/images/avt/0.png?1311)
ta có :
y + y * 1/3 * 9/2 + y * 7/2
y * {1 +3/2 + 7/2 } =252
y * 6 = 252
y = 252 : 6
y = 42
![](https://rs.olm.vn/images/avt/0.png?1311)
\(y+y.\frac{1}{3}:\frac{2}{9}+y:\frac{2}{7}=252\)
\(\Rightarrow y.1+y.\frac{1}{3}.\frac{9}{2}+y.\frac{7}{2}=252\)
\(\Rightarrow y.1+y.\frac{3}{2}+y.\frac{7}{2}=252\)
\(\Rightarrow y\left(1+\frac{3}{2}+\frac{7}{2}\right)=252\)
\(\Rightarrow y.6=252\)
\(\Rightarrow y=252:6\)
\(\Rightarrow y=42\)
Vậy y = 42
~Study well~
#ARMY_BLINK#
y+y.1/3:2/9+y:2/7=252
y.1+y.3/2+y.7/2=252
y.(1+3/2+7/2)=252
y.6=252
y=252:6
y=42
Vậy y=42
~ Học tốt ~
\(y+\frac{1}{3}=\frac{2}{9}+y=\frac{2}{7}=252\)
\(y+\frac{1}{3}=252\)
\(y=252-\frac{1}{3}\)
\(y=\frac{252}{1}-\frac{1}{3}\)
\(y=\frac{756}{3}-\frac{1}{3}\)
\(y=\frac{755}{3}\)
Đề sai sai bạn nhé
Nếu\(y+\frac{1}{3}=\frac{2}{9}+y=\frac{2}{7}=252\)
Vậy \(y\) sẽ ko có kết quả đúng nên mik phải cắt bớt đề đi nha