Question

tìm x biết [ 41 -(2x -5)] = 2^3.5

Answer 1

[ 41 -(2x -5)] = 2^3.5

[ 41 -(2x -5)] =  8.5

[ 41 -(2x -5)] = 40

       2x -5=    41 - 40

         2x -5   = 1

           2x      = 1 + 5

            2x =    6

             x   =   6 : 2 

               x    = 3

HOk tốt

Answer 2

\(41-\left(2x-5\right)=2^3.5\)

\(\Rightarrow41-\left(2x-5\right)=8.5\)

\(\Rightarrow41-\left(2x-5\right)=40\)

\(\Rightarrow2x-5=41-40\)

\(\Rightarrow2x-5=1\)

\(\Rightarrow2x=1+5\)

\(\Rightarrow2x=6\)

\(\Rightarrow x=6:2\)

\(\Rightarrow x=3\)

Vậy x = 3

_Chúc bạn học tốt_

Answer 3

\(41-\left(2x-5\right)=2^3.5\)

\(\Leftrightarrow41-2x+5=8.5\)

\(\Leftrightarrow-2x+5=40-41\)

\(\Leftrightarrow-2x+5=-1\)

\(\Leftrightarrow-2x=-1-5\)

\(\Leftrightarrow-2x=-6\)

\(\Leftrightarrow x=-6:\left(-2\right)=3\)

Vậy \(x=3\)

Answer 4

tớ ko biết

Answer 5

41 - (2x - 5) = 2³ . 5

=> 41 - (2x - 5) = 8 . 5

=> 41 - (2x - 5) = 40

=> 2x - 5 = 41 - 40

=> 2x - 5 = 1

=> 2x = 1 + 5

=> 2x = 6

=> x = 6 : 2

=> x = 3

Vậy x = 3