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x(7-2)=6^2+4
x5=40
x=8
vậy x=8
7x-x=5^21:5^19+3.2^2-7
x(7-1)=5^2+12-7
x6=30
x=5
vậy x=5
nhớ h cho mình
\(7x-2x=6^{17}:6^{15}+44:11\)
\(5x=6^2+4\)
\(5x=36+4\)
\(5x=40\)
\(x=40:5\)
\(x=8\)
\(7x-x=5^{21}:5^{19}+3.2^2-7\)
\(6x=5^2+3.4-7\)
\(6x=25+12-7\)
\(6x=37-7\)
\(6x=30\)
\(x=30:6\)
\(x=5\)
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Trước hết tính tổng :
\(\frac{11}{12}+\frac{11}{12\times13}+...+\frac{11}{89\times100}=1-\frac{1}{12}+\frac{1}{12}-\frac{1}{13}+...+\frac{1}{89}-\frac{1}{100}\)
\(=1-\frac{1}{100}=\frac{99}{100}\)
Do đó \(\frac{99}{100}+x=\frac{5}{3}\)
Vậy \(x-\frac{5}{3}-\frac{99}{100}=\frac{500-297}{300}=\frac{203}{300}\)
Vậy...
bang 112222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222233333333333333333333333356152784327152718452314983254623145652186521865216416524
dung ko??
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11x-7x+x=325
5x = 325
x = 325 :5
x = 65
Vậy x = 65
k cho mk nhe
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11x - 7x + x = 325
=> 5x = 325
=> x = 325 : 5
=> x = 65
Vậy x = 65
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x.(11-7+1)=325
x.5=325
x=325:5
x=65
Nếu mọi người thấy đúng thì tick cho mình nhé!Thanks
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11x-7x+x=325
=>x.(11-7+1)=325
=>x.5=325
=>x=325:5
=>x=65
11.x -7x+x= 325
5x= 325
x=325:5
x=65
hok tốt
cảm ơn nhá!:))