\(^{\hept{\begin{cases}\\\\\end{cases}}\hept{\begin{cases}\\\\\end{cases}}\hept{\begin{cases}\\\\\end{cases}}\hept{\begin{cases}\\\\\end{cases}}\hept{\begin{cases}\\\\\end{cases}}\hept{\begin{cases}\\\\\end{cases}}\hept{\begin{cases}\\\\\end{cases}}^{ }^2\hept{\begin{cases}\\\\\end{cases}}\frac{ }{ }\frac{ }{ }\frac{ }{ }\frac{ }{ }\frac{ }{ }\frac{ }{ }\frac{ }{ }\sqrt[]{}\sqrt{ }}\)

`(7-x)/9=1/3`

`[7-x]/9=3/9`

`7-x=3`

`x=7-3=4`

\(\dfrac{\left(7-x\right)}{9}=\dfrac{1}{3}\)

\(7-x=\dfrac{1}{3}\times9\)

\(7-x=\dfrac{9}{3}\)

\(7-x=3\)

\(x=7-3\)

`x=4`

`(7-x)/9 = 1/3`

`=> (7-x)/9 = 3/9`

`=> 7 - x = 3`

`=> x = 4`.

`4.(x+5)^3-7=101`

`4.(x+5)^3=108`

`(x+5)^3=27`  

`(x+5)^3=3^3 `

`x+5=3`

`x=-2` 

10+2 | x |= 3. (4²-2)

10+2 | x |= 42

x=42-10

x=32

x=32/2

x=16

Chào!Kết bạn nha!

Ta có:10+2|x|=4²–2

           10+2|x|=16–2

                   2|x|=14–10

                     |x|=4:2

                      |x|=2=>x=–2 hoặc.x=2

 Vậy x€{±2}

Sorry bạn mk làm lại cho

Ta có 10+2|x|=3(4²–2)

10+2|x|=3.14

2|x|=42–10

|x|=32:2

|x|=16=>x=16 hoặc x=–16

Vậy x€{±16}

2/3 x X = 31/4 + 1/4

2/3 x X = 8

x           = 8 : 2/3

x           = 12

kq x =12 nha 

tick cho mk vs

thanks

4x5x6/3x10x8=120/240=120:120/240:120=1/2 nha

~HT~

k cho mình nha

@@@@@@@@@@@@@@@@

Bằng 1/2b nha k nhaaa

\(\left(1-\dfrac{1}{3}\right)\times\left(1-\dfrac{3}{7}\right)\times\left(1-\dfrac{3}{10}\right)\times\left(1-\dfrac{3}{97}\right)\times\left(1-\dfrac{3}{100}\right)\)

\(=\dfrac{2}{3}\times\dfrac{4}{7}\times\dfrac{7}{10}\times...\times\dfrac{94}{97}\times\dfrac{97}{100}\)

\(=\dfrac{2\times4\times7\times...\times94\times97}{3\times7\times10\times...\times97\times100}\)

\(=\dfrac{2\times4}{3\times100}=\dfrac{8}{300}=\dfrac{2}{75}\)

\(A=\dfrac{2}{3}\cdot\dfrac{4}{7}\cdot\dfrac{7}{10}\cdot...\cdot\dfrac{94}{97}\cdot\dfrac{97}{100}=\dfrac{2}{3}\cdot\dfrac{1}{25}=\dfrac{2}{75}\)