`x:3/6=5/6`

`x=5/6xx3/6`

`x=15/36`

a)  x : 3/6 = 5/6  

     x = 5/6 x 3/6

     x= 15/36

x= \(\dfrac{5}{6}\)x\(\dfrac{3}{6}\)

x= \(\dfrac{15}{36}\)

x=\(\dfrac{5}{12}\)

\(\dfrac{-1}{4}< \dfrac{x}{24}< \dfrac{-1}{6}\\ \dfrac{-6}{24}< \dfrac{x}{24}< \dfrac{-4}{24}\\ \Rightarrow x=-5\)

\(\dfrac{-1}{4}< \dfrac{x}{24}< \dfrac{-1}{6}\)
\(\Rightarrow\dfrac{-6}{24}< \dfrac{x}{24}< \dfrac{-4}{24}\)
\(\Rightarrow-6< x< -4\)
\(\Rightarrow x=-5\)

`(-1)/4 < x/24 < (-1)/6`

`(-6)/24 < x/24 < (-4)/24`

`->x=-5`

\(\left(x+\frac{4}{3}\right)\cdot\frac{7}{4}=5-\frac{7}{6}\)

\(\left(x+\frac{4}{3}\right)\cdot\frac{7}{4}=\frac{23}{6}\)

\(x+\frac{4}{3}=\frac{23}{6}:\frac{7}{4}=\frac{46}{21}\)

\(x=\frac{46}{21}-\frac{4}{3}\)

\(x=\frac{6}{7}\)

Vậy ....................................

x/3-1/6=4/6

       x= 4/6+1/6

       x=5/6

vậy x bằng 5

Chị là HS lớp 5,từng học lớp 4 chuyên toán

\(\frac{x}{3}-\frac{1}{6}=\frac{4}{6}\)

\(\frac{x}{3}=\frac{4}{6}+\frac{1}{6}=\frac{5}{6}\)

\(\frac{x}{3}=\frac{5}{6}\)

Ta có : x/3 =  4/6 + 1/6 

=>    x/3 =  5/6 

=> x=  5/6  nhân 3 

=> x= 5/2 .

(x-5)⁴ = (x-5)⁶

(x-5)⁴ - ( x-5)⁶ = 0

(x-5)⁴.{ 1 - (x-5)² }= 0

\(\left[{}\begin{matrix}x-5=0\\(x-5)^2=1\end{matrix}\right.\)

\(\left[{}\begin{matrix}x=5\\x-5=1\\x-5=-1\end{matrix}\right.\)

\(\left[{}\begin{matrix}x=5\\x=6\\x=4\end{matrix}\right.\)

\(x\in\) { 4; 5; 6}

a, => -6+x+x-4 = 0

=> 2x-10 = 0

=> 2x = 10

=> x = 10 : 2 = 5

Còn câu b thì đề thiếu nha bạn ơi !

k mk nha

Câu b, mình thiếu mất là: 

b, ( x - 8 ) - ( 8 - x ) = 2 nhé

Câu b, đề thiếu nên mình sửa lại rồi mà

( x + 3⁴ ) . 2¹⁵ = 2¹² . 6⁴

( x + 81 ) . 2¹⁵ = 2¹² . ( 2³ )⁴

( x + 81) . 2¹⁵ = 2¹² . 2¹²

( x + 81 ) . 2¹⁵ = 2²⁴

x + 81              = 2²⁴ : 2¹⁵ = 2⁹ = 512

x = 512 - 81 = 431

x+3⁴=2⁴.3⁴.2¹⁴:2¹⁵

x+3⁴=3⁴.2³

x+3⁴=648

x=648-3⁴=567

\(\left(x+3^4\right)\cdot2^{15}=2^{12}\cdot6^4\)

\(\left(x+3^4\right)\cdot2^{15}=2^{12}\cdot\left(2\cdot3\right)^4\)

\(\left(x+3^4\right)\cdot2^{15}=2^{12}\cdot2^4\cdot3^4\)

\(x+3^4=\left(2^{12}\cdot2^4\right)\div2^{15}\cdot3^4\)

\(x+3^4=2^{16}\div2^{15}\cdot3^4\)

\(x+3^4=2\cdot3^4\)

\(\Rightarrow x=3^4=81\)

Vậy x = 81

\(x-\frac{3}{5}=1\div3\)

\(x-\frac{3}{5}=\frac{1}{3}\)

\(x=\frac{1}{3}+\frac{3}{5}=\frac{14}{15}\)

Chắc x 1/6 = 5 : 4 là phép nhân

\(x\times\frac{1}{6}=5\div4\)

\(x\times\frac{1}{6}=\frac{5}{4}\)

\(x=\frac{5}{4}\div\frac{1}{6}\)

\(x=\frac{15}{2}\)

x-3/5=1/3

x=1/3+3/5

x=14/15

x.1/6=5/4

x=5/4:1/6

x=5/4x6

x=15/2

x - \(\frac{3}{5}\)= 1 : 3 

x - \(\frac{3}{5}\)= \(\frac{1}{3}\)

x         = \(\frac{1}{3}+\frac{3}{5}\)

x         = \(\frac{14}{15}\)