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xxxx-xx-x-25=4430
xxxx-xx-x =4430-25(tim so hang)
Xx111-Xx11-x=4405
Xx(111+11+1)=4405
Xx1099=4405
x =4405:1099(tim thua so)
x =4(dư 9)
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ta có :
xxx+xx+x+x+x=125.
=>111*x+11*x+3*x=125.
=>(111+11+3)*x=125.
=>125*x=125.
=>x=1.
Vậy x=1.
tk mk nha.
chúc các bạn tk cho mk học giỏi
bài dễ quá ;= 111+11+1+1+1=125 chứ mấy bởi vì có năm số mà hàng đơn vị là 5 thế mỗi số có chữ số tận cùng là 1
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x-1390=6000-2080
x-1390=3920
x=3920+1390
x=5310
Mik ks bạn rùi nha, nhớ k mình nhé!
x - 1390 = 6000 - 2080
x - 1390 = 3020
x = 3020 + 1390
x = 4410
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\(\left[{}\begin{matrix}x.36=540\Rightarrow x=540:36\Rightarrow x=15\\2040:x=85\Rightarrow x=2040:85\Rightarrow x=24\\x:53=60\Rightarrow x=60.53\Rightarrow x=3180\end{matrix}\right.\)
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a, \(\overline{xx}+x+5=125\)
\(x\times11+x=120\)
\(x\left(1+11\right)=120\)
\(x=120\div12\)
\(x=10\)
Vậy x = 10
\(\overline{xxx}+\overline{xx}+x+x=992\)
\(x\times111+x\times11+x\times2=992\)
\(x\left(111+11+2\right)=992\)
\(x=992\div124\)
\(x=8\)
Vậy x = 8
\(4725+\overline{xxx}+\overline{xx}+x=54909\)
\(x\times111+x\times11+x=50184\)
\(x\left(111+11+1\right)=50184\)
\(x\times123=50184\)
\(x=408\)
Vậy x = 408
b, \(\overline{xxx}-\overline{xx}-x-25=4430\)
\(x\times111-x\times11-x=4455\)
\(x\left(111-11-1\right)=4455\)
\(x=4455\div99\)
\(x=45\)
Vậy x = 45
\(\overline{xxx}+\overline{xx}+x+x+x+1=1001\)
\(x\times111+x\times11+x\times3=1000\)
\(x\left(111+11+3\right)=1000\)
\(x=1000\div125\)
\(x=8\)
Vậy x = 8
\(35655-\overline{xxx}-\overline{xx}-x=5274\)
\(x\times111+x\times11+x=30381\)
\(x\left(111+11+1\right)=30381\)
\(x=30381\div123\)\
\(x=247\)
Vậy \(x=247\)
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b)35655-(xxx+xx+x)=5274
35655-123x=5274
123x=35655-5274
123x=30381
x=30381/123
x=247
a)100x+10x+x+10x+x+x+x+x+1=101
125x+1=101
125x=101-1
125x=100
x=100:125
x=0,8
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147 - ( x + 36 ) = 29
( x + 36 ) = 147 - 29
( x + 36 ) = 118
x = 118 - 36
x = 82
Mik hứa sẽ tk lại ! Thank you .......!!
147 - ( x + 36 ) = 29
( x + 36 ) = 147 - 29
x + 36 = 118
x = 118 - 36
x = 82
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1200:24x[17-X]=36
50x[17-X]=36
17-X=36:50
17-X=0,72
X=17-0,72
X=16,28.
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a) (42+36):x=66
78:x=66
x=78:66
x=13/11
b) 90:x-48:x=3
(90-48):x=3
42:x=3
x=42:3
x= 14
a) 42:x+36:x=66
42.1/x+36.1/x=66
1/x.(42+36)=66
1/x=11/13
x=1:11/13
x=13/11
b) 90:x-48:x=3
90.1/x-48.1/x=3
1/x(90-48)=3
1/x=1/14
x=14