Question

720:[41-(2x-5)]=23.5

Answer 1

720 : [ 41 - ( 2x - 5 ) ] =23 . 5

720 : [ 41 - ( 2x - 5 ) ] = 115

41 - ( 2x -5 ) =720 : 115

41 - ( 2x - 5 ) = 144/23

2x - 5 = 41 - 144/23

2x - 5 =799/23

2x = 799/23 + 5

2x = 914/23

x = 914/23 : 2

x = 914/23 . 1/2

x = 457/23

Vậy x = 457/23

Answer 2

\(720:\left[41-\left(2x-5\right)\right]=23.5\)

\(720:\left[41-\left(2x-5\right)\right]=115\)

\(41-\left(2x-5\right)=720:115\)

\(41-\left(2x-5\right)=\frac{144}{23}\)

\(2x-5=41-\frac{144}{23}\)

\(2x-5=\frac{799}{23}\)

\(2x=\frac{799}{23}+5\)

\(2x=\frac{914}{23}\)

\(x=\frac{914}{23}:2\)

\(x=\frac{457}{23}\)