Question

(9x-21):3=2

Answer 1

\(\left(9x-21\right):3=2\)

\(9x-21=2x3\)

\(9x-21=6\)

\(9x=6+21\)

\(9x=27\)

\(x=27:9\)

\(x=3\)

Answer 2

9x-21 = 2x3=6

9x = 6 + 21 = 27

x= 27 : 9

x = 3

Ủng hộ mik nha mọi người

Answer 3

( 9x - 21) : 3 = 2

9x - 21 = 6

9x = 27

x = 3

Answer 4

a ) ( 9x - 21 ) : 3 = 2

9x - 21 = 2 . 3

9x - 21 = 6

9x = 6 + 21 

9x = 27

x = 27 : 9 

x = 3

Đáp số : 3

Answer 5

( 9x - 21 ) : 3 = 2

9x - 21 = 2 x 3

9x - 21 = 6

9x = 6 + 21

9x = 27

x = 27 : 9

x = 3

Answer 6

(9x-21):3 =2

(9x-21) =2.3

(9x-21) =6

9x =6+21 =27

 x =27:9 =3

     

Answer 7

( 9x - 21 ) : 3 = 2

9x - 21 = 2 x 3

9x - 21 = 6

9x = 6 + 21 

9 x = 27

x = 27 : 9

x = 3

Answer 8

\(\left(9x-21\right)\div3=2\)
\(9x-21=2.3\)
\(9x-21=6\)
\(9x=6+21\)
\(9x=27\)
\(x=27\div9\)
\(\Rightarrow x=3\)
\(\Rightarrow\)Tích mình mình tích lại.

Answer 9

(9x-21) : 3=2

9x-21= 2x3

9x-21=6

9x=6+21

9x=27

x=27:9

x=3

Answer 10

\(\left(9x-21\right):3=2\)

\(\left(9x-21\right)\) \(=2.3\)

\(\left(9x-21\right)\) \(=6\)

  \(9x\)                 \(=6+21\)

  \(9x\)                  \(=27\)

    \(x\)                   \(=27:9\)

   \(x\)                     \(=3\)