Question

LÀM ƠN GIAI HỘ MIK BÀI NÀY NHÉ !

/2x-1/+3=16

 

Answer 1

/ 2x - 1 / + 3 = 16

/ 2x - 1 / = 16 - 3

/ 2x - 1 / = 13

Xét 2x - 1 = 13

2x = 13 + 1

2x = 14

x = 14 : 2

x = 7

Xét 2x - 1 = - 13

2x = - 13 + 1

2x = - 12

x = - 12 : 2

x = - 6

Vậy x =  7

hoặc x = -6

Answer 2

/2x-1/+3=16

/2x-1/=16-3

/2x-1/=13

2x-1=13

2x=13+1

2x=14

x=14:2

x=7 

vậy x=7

Answer 3

( 2x - 1 ) + 3 = 16

2x - 1 = 16 - 3

2x - 1 = 13

2x = 13 + 1

2x = 14

  x = 14 : 2

  x = 7

Answer 4

<=> ! 2x - 1 ! = 16 - 3

<=> ! 2x - 1 ! = 13

<=>  2x - 1     = 13 hay 2x - 1 = -13

<=> 2x           = 13 + 1 hay 2x = -13 + 1

<=> 2x           = 14      hay 2x  = -12

<=>   x          = 14 : 2 hay x     = -12 : 2

<=>  x           = 7       hay x      = -6

Answer 5

| 2x - 1 | + 3 = 16

| 2x - 1 | = 16 - 3

| 2x - 1 | = 13

TH1 : 2x - 1 = -13

2x = -12'

x = -6

TH2 : 2x - 1 = 13

2x = 12

x = 6

Vậy x = 6 hoặc x = -6

Answer 6

Ta có : /2x-1/=16-3

/2x-1/=13

2x-1=13

2x=13+1

2x=14

x=14:2

x=7 nha bn

Answer 7

    /2x-1/+3=16

=>/2x-1/=16-3=13

=>\(\orbr{\begin{cases}2x-1=13\Leftrightarrow2x=14\Rightarrow x=7\\2x-1=-13\Leftrightarrow2x=-12\Rightarrow x=-6\end{cases}}\)

Vay x thuoc {7;-6}

Answer 8

/2x - 1 / = 16 - 3

/2x-1/ = 13

\(\Rightarrow\orbr{\begin{cases}2x-1=13\\2x-1=-13\end{cases}}\Rightarrow\orbr{\begin{cases}2x=13+1\\2x=-13+1\end{cases}}\Rightarrow\orbr{\begin{cases}2x=14\\2x=-12\end{cases}}\Rightarrow\orbr{\begin{cases}x=14:2\\x=-12:2\end{cases}}\Rightarrow\orbr{\begin{cases}x=7\\x=-6\end{cases}}\)

Vậy x \(\varepsilon\) { -6 ; 7 }

Answer 9

/2x-1/+3=16

/2x-1/    =16-3

/2x-1/    =13 <=> 2x-1=­13 hoac 2x-1=-13

+ 2x-1=13

   2x   =13+1

   2x   =14

     x   =14 : 2

     x   =7 thuoc Z (TM)

+ 2x-1=-13

   2x  = -13+1

   2x  = -12

     x  = -12 : 2

     x  = -6 thuoc Z (TM)

Vậy x =-6 ; x=7

Làm vậy nha bn!!!!!