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0,25 x y = 0,125 + 0,5
0,25 x y = 0,625
y = 0,625 : 0,25
y = 0,25
vậy x = ...
![](https://rs.olm.vn/images/avt/0.png?1311)
a) y x 8 + y : 0,5 = 9,78
y x 8 + y x 2 = 9,78
y x ( 8 + 2 ) = 9,78
y x 10 = 9,78
y = 9,78 : 10
y = 0,978
b) 92 . x + x : 0,125 = 746,2
92 . x + x . 8 = 746,2
x . ( 92 + 8 ) = 746,2
x . 100 = 746,2
x = 746,2 : 100
x = 7,462
![](https://rs.olm.vn/images/avt/0.png?1311)
yx110-y:0,125-y:0,5=5,702
yx110-yx8-yx2 =5,702
yx(110-8-2) =5,702
yx100 =5,702
y =5,702:100
y =0,05702
\(y\times110-y:0,125-y:0,5=5,702\)
\(y\times110-y\times8-y\times2=5,702\)
\(y\times\left(110-8-2\right)=5,702\)
\(y\times100=5,702\)
\(y=5,702:100\)
\(y=0,05702\)
Vậy...............
![](https://rs.olm.vn/images/avt/0.png?1311)
y x 110 - y : 0,125 - y : 0,5 = 5,702
=>y x 110 - y x 8 - y x 2 = 5,702
=>y x ( 100 - 8 - 2 )= 5,702
=>y x 100 = 5,702
=> y = 5,702 : 100
=> y =0,05702
Vậy y = 0,05702
HOK TỐT
Ta có:
\(y\times110-y:0,125-y:0,5=5,702\)
\(\Leftrightarrow y\times110-y:\frac{1}{8}-y:\frac{1}{2}=5,702\)
\(\Leftrightarrow y\times110-y\times8-y\times2=5,702\)
\(\Rightarrow y\times\left(110-8-2\right)=5,702\)
\(\Rightarrow y\times100=5,702\)
\(\Rightarrow y=\frac{5,702}{100}\)
\(\Rightarrow y=0,05702\)
Vậy \(y=0,05702\)
#tippiecat
![](https://rs.olm.vn/images/avt/0.png?1311)
\(y+y:0,5+y:0,25+y:0,125=15\)
\(y.1+y.2+y.4+y.8=15\)
\(y.\left(1+2+4+8\right)=15\)
\(y.15=15\)
\(y=1\)
. là dấu nhân!
![](https://rs.olm.vn/images/avt/0.png?1311)
x : 0,125 + x : 0,5 + x : 0,25 = x : 0,5 + 165
x : 8 + x : 2 + x : 4 = x : 2 + 165
x : x : 8 + x : 2 + x : 4 = 2 + 165
1 : 8 + x : 2 + x : 4 = 167
8 + x : [ 2 + 4 ] = 167
8 + x : 6 + 167
x : 6 = 167 - 8
x : 6 = 159
x = 159 : 6
x = 26.5
![](https://rs.olm.vn/images/avt/0.png?1311)
\(y+y:0,5+y:0,125=15\)
\(y:\left(1+0,5+0,125\right)=15\)
\(y:1,625=15\)
\(y=24,375\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
x : 0,5 + 0,125 = 9,78
x : 0,5 = 9,78 - 0,125
x : 0,5 = 9,655
x = 9,655 . 0,5
x = 4,8275
Vậy x = 4,8275
2,5 nhé bạn
0,25.y-0,5=0,125
0,25.y=0.125+0,5
0,25.y=0,625
y=0,625:0,25
y=2,5
HT