Question

Tìm $x$, biết:

a) $x+\dfrac{5}{6}=\dfrac{4}{3}$

b) $x:2^4=8^3$

c)$\dfrac{13}{4}.\Big(\dfrac{5}{52}-x \Big)=\dfrac{1}{4}$

Answer 1

`x + 5/6 = 4/3 `

`=> x = 4/3 - 5/6`

`=> x = 8/6 - 5/6`

`=> x = 3/6`

`=> x = 1/2`

Vậy ...

`x : 2^4 = 8^3`

`=> x : 2^4 = 2^9`

`=> x = 2^9 . 2^4`

`=> x = 2^13`

Vậy ...

`13/4 : (5/52 - x ) = 1/4`

`=> 5/52 - x = 13/4 : 1/4`

`=> 5/52 - x = 13`

`=> x = 5/52 - 13`

`=> x = -671/52`

Vậy ...

Answer 2

`a) x+5/6=4/3`

`x=4/3- 5/6`

`x=1/2`

`b) x: 2^4= 8^3`

`x:2^4= 2^9`

`x=2^9. 2^4`

`x=2^13`

`c) 13/4.(5/52 -  x)=1/4`

`(5/52-x)=13/4: 1/4`

`5/52 -x= 13`

`x=5/52- 13`

`x= -671/52`

Answer 3

a)1/2  b)8192  c)1/52

Answer 4

a,1/2

b,32

c,1/52

 

Answer 5

a) 1/2

b) 2¹³

^{c) 1/52}

Answer 6

a,1/2

b, 8192

c, 1/52

Answer 7

dăda ư

Answer 8

a,1/2  b,8192   c,1/52

Answer 9

a,x+5/6=4/3

x        =4/3-5/6

x        =1/2

b,x:2^4=8^3

   x=512x16

   x=8192

c,13/4.(5/52-x)=1/4

(5/52-x)=1/13

-x=1/13-5/52

-x=-1/52

x=1/52

Answer 10

a, x=1/2

b, x=8192

c, x=1/52

Answer 11

a. x+5/6=4/3

    x=4/3-5/6

    x=1/2

    Vậy x= 1/2

b. x:2⁴=8³

    x:2⁴=(2³)³

    x=2⁹.2⁴

    x=2¹⁵

Vậy x=2¹⁵

c. 13/4.(5/52-x)=1/4

             5/52-x=1/4:13/4

             5/52-x=1/13

                      x=5/52-1/13

                      x=1/52

 Vậy x = 1/52

Answer 12

a. x+5/6=4/3

    x=4/3-5/6

    x=1/2

    Vậy x= 1/2

b. x:2⁴=8³

    x:2⁴=(2³)³

    x=2⁹.2⁴

    x=2¹⁵

Vậy x=2¹⁵

c. 13/4.(5/52-x)=1/4

             5/52-x=1/4:13/4

             5/52-x=1/13

                      x=5/52-1/13

                      x=1/52

 Vậy x = 1/52

Answer 13

a)\(x=\dfrac{4}{3}-\dfrac{5}{6}\\ x=\dfrac{1}{2}\\ vậyx=\dfrac{1}{2}\)

b)\(x:16=512\\ x=512.16\\ x=8192\\ vậyx=8192\)
c\(\dfrac{5}{52}-x=\dfrac{13}{4}:\dfrac{1}{4}\\ \dfrac{5}{52}-x=13\\ x=\dfrac{5}{52}-13\\ x=\dfrac{-671}{52}\\ vậyx=\dfrac{-671}{52}\)

Answer 14

a)x+5/6=4/3                                                                   

x=4/3-5/6

x=1/2

b)x:2⁴ =8³

x:2⁴=(2³)³

x:2⁴=2⁹

x=2⁹⁺⁴

x=2¹³

c)13/4.(5/52-x)=1/4

(5/52-x)=1/4:13/4

5/52-x=1/13

x=5/52-1/13

x=1/52

Answer 15

\(^{^{ }^{ }^{ }}\)

Answer 16

a,\(\dfrac{1}{2}\)

b,\(2^{13}\)

c,\(\dfrac{1}{52}\)

Answer 17

a,\(\dfrac{1}{2}\)

b,\(2^{13}\)

c,\(\dfrac{1}{52}\)

Answer 18

a,\(\dfrac{1}{2}\)

b,\(2^{13}\)

c,\(\dfrac{1}{52}\)

Answer 19

a,\(\dfrac{1}{2}\)

b,\(2^{13}\)

c,\(\dfrac{1}{52}\)

Answer 20

a,\(\dfrac{1}{2}\)

b,\(2^{13}\)

c,\(\dfrac{1}{52}\)

Answer 21

a,\(\dfrac{1}{2}\)

b,\(2^{13}\)

c,\(\dfrac{1}{52}\)

Answer 22

a,\(\dfrac{1}{2}\)

b,\(2^{13}\)

c,\(\dfrac{1}{52}\)

Answer 23

a,\(\dfrac{1}{2}\)

b,\(2^{13}\)

c,\(\dfrac{1}{52}\)

Answer 24

a,\(\dfrac{1}{2}\)

b,\(2^{13}\)

c,\(\dfrac{1}{52}\)

Answer 25

a,\(\dfrac{1}{2}\)

b,\(2^{13}\)

c,\(\dfrac{1}{52}\)

Answer 26

x+5/6=4/3

x       =4/3-5/6

x       =1/2

b,x:2^4=8^3

x          =(2^3)^3.2^4

x          =8192

c,13/4.(5/52-x)=1/4

5/52-x             =1/4:13/4

5/52-x             =1/13

x                     =5/52-1/13

x=1/52

 

Answer 27

a)x+5/6=4/3

x=4/3−5/6

x=1/2

Vậy x = 1/2

b)x:24=83

x:24=29

x=29.24

x=213

Vậy x = 213

c)13/4.(5/52− x)=1/4

(5/52−x)=13/4:1/4

5/52−x=13

x=5/52−13

x=−671/52

Vậy x = -671/52

 

Answer 28

A, 3/6

B, 2 mũ 13

C, 1/52

 

Answer 29

 a)x+ 5/6 = 4/3            b) x: 2⁴ = 83                                c) 13/4 . (5/52 - x) = 1/4

x= 4/3 -5/6                   x= 2⁹. 24                                     5/52 - x = 1/4 : 13/4

x= 3/6=1/2                   x= 213                                           5/52 - x = 1/13

Vậy, x=1/2                          Vậy, x=  2¹³                                      x= 5/52 - 1/13

                                                                                           x= 1/52

                                                                                          Vậy, x= 1/52

Answer 30

a) x + 5/6 = 4/3

    x          = 4/3 - 5/6

    x          = 1/2

Vậy x = 1/2

b) x : 2^4 = 8^3

    x: 2^4  = (2^3)^3

    x : 2^4 = 2^9

    x          = 2^9 . 2^4

    x          = 2^15

c) 13/4. (5/52 - x) = 1/4

              5/52 - x  = 1/4 :13/4

              5/52 - x   = 1/13

                        x   = 5/52 - 1/13

                        x = 1/52

 Vậy x = 1/52