Question

Tìm số tự nhiên x 
72-5.x=27 ? 

Answer 1

72 - 5x = 27

=> 5x = 45

=> x = 9

vậy_

Answer 2

72 - 5x = 27

       5x = 72 - 27

       5x = 45

         x = 45 : 5

         x = 9.

Hok tốt!

Answer 3

\(72-5.x=27\)

\(5.x=72-27\)

\(5.x=45\)

\(x=45:5\)

\(x=9\)

Answer 4

Cách 1:

72-5x=27

<=>-5x = 27-72 

<=>-5x = -45

<=> x = 9

Cachs2:

72-5x=27

<=> 72 - 27 = 5x

<=> 45 = 5x

<=> x = 9

Answer 5

\(75-5x=27\Rightarrow5x=75-27\)

\(5x=48\Rightarrow x=48:5\)

\(x=\frac{48}{5}\)

Vậy \(x=\frac{48}{5}\)