Question

7x - ( - 11 ) = |-3|

12 - ( x - 11 ) = ( -9 )

| 13  - x | = 11

3^2x-1=234

ai nhanh và đúng nhất mk tick 3 cái

Answer 1

7x - ( -11 ) = | -3 |

7x + 11 = 3

7x = -8

x = -8/7

Answer 2

12 - ( x - 11 ) = ( -9 )

12 - x + 11 = -9

-x = -32

x = 32

Answer 3

\(\left|13-x\right|=11\)

\(\Rightarrow\orbr{\begin{cases}13-x=11\\13-x=-11\end{cases}}\)

\(\Rightarrow\orbr{\begin{cases}x=2\\x=24\end{cases}}\)

Answer 4

Sửa đề :

\(3^{2x-1}=243\)

\(3^{2x-1}=3^5\)

\(\Leftrightarrow2x-1=5\)

\(\Leftrightarrow2x=6\)

\(\Leftrightarrow x=3\)

Answer 5

7x - ( - 11 ) = |-3|

=> 7x + 11 = 3

=> 7x = -8

=> x = -8/7

12 - ( x - 11 ) = ( - 9 )

=> x - 11 = 21

=> x = 32

| 13 - x | = 11

TH1 : | 13 - x | = 11

=> x = 2

TH2 : | 13 - x | = -11

=> x = 23

Vậy ......

3^2x-1 = 234

=> 3^2x-1 = 3⁵

=> 2x - 1 = 5

=> 2x = 6

=> x = 3

Answer 6

Trả lời :;.......................................

7x - ( - 11 ) = \(|-3|\)

7x -    11     =  3

7x               = 3 + 11

7x               = 14

12- ( x  - 11 ) = ( -9 )

12 - ( x - 11 ) = 9

         x - 11    = 12 + 9

         x - 11    = 21

         x           = 21 - 11

         x           = 10

\(|13-x|=11\)

              x    = 13 - 11

              x    = 2

3^2x-1 = 234

^2x-1    = 234 : 3

^2x-1    = 78

^2x       = 78 - 1

^2x       = 76

 ^x        =  76 : 2

 ^x        = 38

Hk tốt,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

k nhé nếu đúng