tìm x 125 x X - X x 47 = 25350 2125 : X = 100
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![](https://rs.olm.vn/images/avt/0.png?1311)
- 125 . x - x . 47 = 25350
(125 - 47) . x = 25350
78 . x = 25350
x = 325
- 3978 : x - 987 : x = 100
3978 . 1/x - 987 . 1/x = 100
(3978 - 987) . 1/x = 100
2991 . 1/x = 100
1/x = 100/2991
x = 2991/100
#Đức Lộc#
![](https://rs.olm.vn/images/avt/0.png?1311)
\(125\times x-x\times47=25350\)
\(=x\times\left(125-47\right)=25350\)
\(=x\times78=25350\)\(\Rightarrow x=25350\div78=325\)
Vậy \(x=325\)
![](https://rs.olm.vn/images/avt/0.png?1311)
2125 : X - 125 : X = 100
<=> ( 2125 - 125 ) : X = 100
<=> 2000 : X = 100
=> X = 2000 : 100
X = 20
2125:X-125:X
=>(2125-125):X=100
=>2000:X =100
=>X =2000:100
=>x =20
![](https://rs.olm.vn/images/avt/0.png?1311)
a,
2125:X-125:X=100
=>[2125-125]:X=100
=>2000:X=100
=>X=2000:100
=>X=20
Vậy X=20
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a, X x 186-Z x 86=3400
X x (186-86) =3400
X x 100=3400
X= 3400: 100
X= 34
b, X x 75+57 x X =32604
X x (75+57)=32604
X x 132=32604
X= 32604 : 132
X = 247
c, 216: X +34: X =10
(216+34) : X=10
250 : X =10
X= 250:10
X= 25
d, 2125:X -125 :X=100
(2125-125) :X= 100
2000: X=100
X= 2000:100
X= 20
a) \(x\times186-x\times86=3400\)
\(x\times\left(186-86\right)=3400\)
\(x\times100=3400\)
\(x=3400:100\)
\(x=34\)
b) \(x\times75+57\times x=32604\)
\(x\times\left(75+57\right)=32604\)
\(x\times132=32604\)
\(x=32604:132\)
\(x=247\)
c) 216 : x + 34 : x = 10
(216 + 34) : x = 10
250 : x = 10
x = 250 : 10
x = 25
d) 2125 : x - 125 : x = 100
(2125 - 125) : x = 100
2000 : x = 100
x = 2000 : 100
x = 20
\(2125:x=100\)
\(x=2125:100\)
\(x=21,25\)
125 . x - x . 47 = 25350
x . ( 125 - 47 ) = 25350
78x = 25350
=> x = 325