Question

Tìm số tự nhiên X thỏa mãn:

(13x-12²):5=5

3x[8²-2.(2⁵-1) ]=2022

Answer 1

(13x-12²):5=5

13x-12² = 5 . 5 

13x-12² = 25

       13x = 25 + 12²

       13x = 169

            x = 169 : 13

            x = 13

Vậy x = 13 

Answer 2

3x[8²-2.(2⁵-1) ]=2022

3x [ 8²-2.31 ]= 2022

3x [64 -62 ] = 2022

3x . 2 = 2022

     3x = 2022 : 2

     3x = 1011

       x = 1011 : 3 

       x = 337

Vậy x = 337

Answer 3

(13x - 12^2) : 5 = 5

(13x - 144) : 5 = 5

        13x - 144 = 5 x 5

        13x - 144 = 25

                 13x = 25 + 144

                 13x = 169

                     x = 169 : 13

                     x = 13

                 Vậy x = 13

Answer 4

3 x [8^2 - 2 x (2^5 - 1)] = 2022

3x  [64 - 2 . (32 - 1)] = 2022

3x [64 - 2 . 31] = 2022

3x [64 - 62] = 2022

          3x . 2 = 2022

                3x = 2022 : 2

                3x = 1011

                  x = 1011 : 3

                  x = 337

              Vậy x = 337 

Answer 5

`text{a}``(13x - 12<sup>2</sup>) : 5 = 5`

`​<=> 13x - 12<sup>2</sup> = 25`

`<=> 13x - 144 = 25`

`<=> 13x = 169`

`<=> x = 169 : 13`

`<=> x = 13`

3x [8² - 2 . (2⁵ - 1)] = 2022

`text{b}``3x [8<sup>2</sup> - 2 . (2<sup>5</sup> - 1)] = 2022`

`<=> 3x [64 - 2 . (32 - 1)] = 2022`

`<=> 3x [64 - 2 . 31] = 2022`

`<=> 3x [64 - 62] = 2022`

`<=> 3x . 2 = 2022`

`<=> 3x = 1011`

`<=> x = 1011 : 3`

`<=> x = 337`

Answer 6

a) \(\left(13x-12^2\right):5=5\)

\(13x-12^2=5.5\)

\(13x-144=25\)

\(13x=25+144\)

\(13x=169\)

\(x=13\)

Vậy x = 13

b) \(3x\left[8^2-2.\left(2^5-1\right)\right]=2022\)

\(3x\left[64-2.\left(32-1\right)\right]=2022\)

\(3x\times2=2022\)

\(3x=1011\)

\(x=337\)

Vậy x = 337

Answer 7

Đáp án đúng là 13

Answer 8

X là 13 nha