\(\Leftrightarrow41-2x+5=720:20=36\)

=>-2x=0

hay x=0

x = 14

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

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

\(720:\left[41-\left(2x-5\right)\right]=2^3\cdot5\)

\(\Rightarrow720:\left(41-2x+5\right)=8\cdot5\)

\(\Rightarrow720:\left(46-2x\right)=40\)

\(\Rightarrow46-2x=720:40\)

\(\Rightarrow46-2x=18\)

\(\Rightarrow2x=46-18\)

\(\Rightarrow2x=28\)

\(\Rightarrow x=28:2\)

\(\Rightarrow x=14\)

`@` `\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.`

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)]=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

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

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

720 : [41 - (2x -5)] = 2^3 * 5

41 - (2x -5) = 18 

2x - 5 = 23 

2x = 28 

x= 14