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a) y : 125 = 207
<=>y=207x125
y=25875
Vậy x=25875
b) 1250 : y = 25
<=>x=1250:25
<=>x=50
Vậy x=50
\(a,y:125=207\)
<=>\(y=207.125\)
<=>\(y=25875\)
\(b,1250:y=25\)
<=>\(y=1250:25\)
<=>\(y=50\)
![](https://rs.olm.vn/images/avt/0.png?1311)
125 \(\times\) y - 12 \(\times\)y - 13 \(\times\) y = 5208000
y \(\times\)( 125 - 12 - 13) = 5208000
y \(\times\) 100 = 52008000
y = 5208000 : 100
y = 52080
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a) \(24\times y+76\times y=100\)
\(\Rightarrow\left(24+76\right)\times y=100\)
\(\Rightarrow100\times y=100\)
\(\Rightarrow y=100:100\)
\(\Rightarrow y=1\)
b) \(125\times y-100\times y=1000\)
\(\Rightarrow\left(125-100\right)\times y=1000\)
\(\Rightarrow25\times y=1000\)
\(\Rightarrow y=1000:25\)
\(\Rightarrow y=40\)
![](https://rs.olm.vn/images/avt/0.png?1311)
125 *y - y * 46 = 2262
y* (125- 46 -1 ) = 2262
y* 78 = 2262
y = 2262 : 78
y = 29
125.y - y.46 = 2262
(125 - 46).y = 2262
79.y = 2262
y = 2262/79
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a
x | 8 | 30 | 100 |
125 + x | 125 + 8 = 133 | 125 + 30 = 155 | 125 + 100 = 225 |
b
y | 200 | 960 | 1350 |
y - 20 | 200 - 20 = 180 | 960 - 20 = 940 | 1350 - 20 = 1330 |
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125 \(\times\) y - 12 \(\times\) y - 13 \(\times\) y = 5208000
y \(\times\) ( 125 - 12 - 13) = 5208000
y \(\times\) 100 = 5 208 000
y = 5 208 000 : 100
y = 52 080
![](https://rs.olm.vn/images/avt/0.png?1311)
y x 4 + y x 6 = 1850
y x ( 4 + 6 ) = 1850
y x 10 = 1850
y = 1850 : 10
y = 185
y x 125 - y x 25 = 9000
y x ( 125 - 25 ) = 9000
y x 100 = 9000
y = 9000 : 100
y = 90
* y x 4 + y x 6 = 1850
y x (4 + 6) = 1850
y x 10 = 1850
y = 1850 : 10 = 185
* y x 125 - y x 25 = 9000
y x (125 - 25) = 9000
y x 100 = 9000
y = 9000 : 100 = 90