Tìm x. 570,4:(x-20,307)=46
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\(x-152:x=46\)
\(x^2\) - 152\(\) - 46\(x\) = 0
\(x^2\) - 23\(x\) - 23\(x\) + 529 - 681 = 0
\(x\)(\(x-23\)) - 23(\(x\) - 23) = 681
(\(x-23\))(\(x-23\)) = 681
\(\left[{}\begin{matrix}x-23=-\sqrt{681}\\x+23=\sqrt{681}\end{matrix}\right.\)
\(\left[{}\begin{matrix}x=23-\sqrt{681}\\23+\sqrt{681}\end{matrix}\right.\)
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\(\Rightarrow x\times\left(56-46\right)=32250\\ \Rightarrow x\times10=32250\\ \Rightarrow x=3225\)
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26 + 8.x=6.x +46
8x = 6x + 46 -26
8x - 6x = 46 - 26
2x = 20
x = 20 : 2 = 10
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=> 311 - x + 82 = 46 + x - 21
=> 393 - x = x + 25
=> 2x = 368
=> x = 184
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17 + 46 - \(x\) = 27
63 - \(x\) =27
\(x\) = 63 - 27
\(x\) = 36
25 + \(x\) = 73 - 19
25 + \(x\) = 54
\(x\) = 54 - 25
\(x\) = 29
570,4 : ( x - 20,307 ) = 46
x - 20,307 = 570,4 : 46
x - 20,307 = 12,4
x = 12,4 + 20,307
x = 32,707