( 720:[41-(2x-5)]=23.5
Những câu hỏi liên quan
720 : [ 41 - ( 2x - 5 ) = 2^2 . 5
\(\Leftrightarrow41-2x+5=720:20=36\)
=>-2x=0
hay x=0
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720÷[41-(2x+5)]=2²×5
\(\Leftrightarrow36-2x=36\)
=>x=0
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720÷[41-(2x+5)]=2³×5
720: [41-(2x+5)]=8 x 5
720:[41-(2x+5)]=40
41-(2x+5)=720:40
41-(2x+5)=18
2x+5=41-18
2x+5=23
2x =23-5
2x =18
x =18:2
x =9
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d) 720:[41-(2x-5)]=2³.5
720 : [41 - (2x - 5)] = 2³.5
720 : [41 - (2x - 5)] = 8.5
720 : [41 - (2x - 5)] = 40
41 - (2x - 5) = 720 : 40
41 - (2x - 5) = 18
2x - 5 = 41 - 18
2x - 5 = 23
2x = 23 + 5
2x = 28
x = 28 : 2
x = 14
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\(720:\left[41-\left(2x-5\right)\right]=2^3\cdot5\)
\(\Rightarrow720:\left(41-2x+5\right)=8\cdot5\)
\(\Rightarrow720:\left(46-2x\right)=40\)
\(\Rightarrow46-2x=720:40\)
\(\Rightarrow46-2x=18\)
\(\Rightarrow2x=46-18\)
\(\Rightarrow2x=28\)
\(\Rightarrow x=28:2\)
\(\Rightarrow x=14\)
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`@` `\text {Ans}`
`\downarrow`
`d)`
`720 \div [41 - (2x - 5)] = 2^3 * 5`
`=> 720 \div [41 - (2x - 5)] = 40`
`=> 41 - (2x - 5) = 720 \div 40`
`=> 41 - (2x - 5) = 18`
`=> 2x - 5 = 41 - 18`
`=> 2x - 5 = 23`
`=> 2x = 23 + 5`
`=> 2x = 28`
`=> x = 28 \div 2`
`=> x = 14`
Vậy, `x = 14.`
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720:((5-2x)-(-41))=2^3*5
720 : [(5 - 2x) - (-41)] = 23 . 5
720 : [(5 - 2x) + 41] = 8 . 5
720 : [(5 - 2x) + 41] = 40
(5 - 2x) + 41 = 720 : 40
(5 - 2x) + 41 = 18
5 - 2x = 18 - 41
5 - 2x = -23
2x = 5 - (-23) = 5 + 23
2x = 28
x = 28 : 2 = 14
=> x = 14
720:41-(2x-5)=23*5
720:[41-(2x-5)]=23.5
720:[41-(2x-5)]=23.5
720:[41-(2x-5)]=8.5
720:[41-(2x-5)]=40
41-(2x-5)=720:40
41-(2x-5)=18
2x-5=41-18
2x-5=23
2x=23+5
2x=28
x=28:2
x=14
Vậy x=14
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720:[41-(2x-5)]=23.5
720:[41-(2x-5)]=2^3.5
720:[41-2x+5]=40
[41+5-2x]=720:40
46-2x=18
2x=46-18
2x=28
x=14
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tìm x biết 720 : [ 41- (2x -5) ] = 2^3 .5
720:[41-(2x - 5)]=23.5
720:[41-(2x - 5)]=8.5
720:[41-(2x - 5)]=40
41-(2x - 5)=720:40
41-(2x - 5)=18
2x - 5=41-18
2x - 5=23
2.x=23+5
2.x=28
x=28:2
x=14
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