435+24:x = 500 - 65 + 24:3

435+24:x = 435+24:3

=> 24:x= 24:3 (vì chung số hạng 435)

=> x = 3

Theo đề bài ta thấy:

435+24:x=500-65+24:3

Mà 435=500-65 nên chỉ còn 24:x=24:3

\(\Rightarrow\)X=3

3.|x| + 9 = 24

=> 3.|x| = 24 -9 

=> 3.|x| = 15 

=>|x| = 15 : 3 

=> |x| = 5

=> x\(\in\) { -5 ; 5}

\(3\left|x\right|+9=24\\ \Rightarrow3\left|x\right|=24-9\\ \Rightarrow3\left|x\right|=15\\ \Rightarrow\left|x\right|=\dfrac{15}{3}\\ \Rightarrow\left|x\right|=5\\ \Rightarrow x=\pm5\)

Vậy \(x\in\left\{5;-5\right\}\)

\(x+\frac{x}{3}=24\)

\(x\times1+x\times\frac{1}{3}=24\)

\(x\times\left(1+\frac{1}{3}\right)=24\)

\(x\times\frac{4}{3}=24\)

           \(x=24:\frac{4}{3}\)

            \(x=18\)

\(38.x+24.x=4221\)

\(\left(38+24\right).x=4221\)

               \(62.x=4221\)

                      \(x=4221:62\)

                      \(x=\frac{4221}{62}\)

tự rút gọn nha. 

kb vs tớ nha

Mình cho x là a nhé!

38xa+24xa=4221

(38+24)xa=4221

62xa=4221

a=4221:62

a=4221/62

Chúc bạn may mắn!

ko tinh dc

\(24+\frac{x}{50}+x=\frac{3}{5}\)

\(24+\frac{x}{50}+\frac{50x}{50}=\frac{3}{5}\)

\(24+\frac{51x}{50}=\frac{3}{5}\)

\(\frac{51x}{50}=-\frac{175}{5}\)

\(\Rightarrow255x=-8750\)

\(\Rightarrow x=-\frac{1750}{51}\)

x + x/3       = 24

x/1 + x/3   = 24

3x/3 + x/3 = 24

4x/3           = 24

4x               = 24 . 3

4x               = 72

  x               = 72 : 4

  x               = 18

\(x+\frac{x}{3}=24\)

\(\frac{x}{1}+\frac{x}{3}=24\)

\(\frac{3x}{3}+\frac{x}{3}=24\)

\(\frac{4x}{3}=24\)

\(4x=24\times3\)

\(4x=72\)

\(x=72:4\)

\(x=18\)

X + \(\frac{x}{3}\)= 24

\(\frac{x}{1}\)+  \(\frac{x}{3}\) = 24

\(\frac{3x}{3}\)+  \(\frac{x}{3}\) =24

\(\frac{4x}{3}\) =24

4x= 24x3

4x=72

x =72:4 

x=18

tk nhé

38 x X + 24 x X + X = 4221

X x ( 38 + 24 + 1 ) = 4221

X x 63 = 4221

         X = 4221 : 63

         X = 67 .

Đề Bài: 38 x X + 24 x X + X = 4221

=>   38 x X + 24 x X + X x 1 = 4221

=>    X x ( 38 + 24 + 1 )        = 4221

=>    X x 63                          = 4221

=>    X                                 = 4221 : 63

Ai tík cho m, m tík lại cho gấp 3 lần lun !!!

=>X =  67

Theo đầu bài ta có:
\(\left(2x-7\right)^{24}+\left(7-2x\right)^{24}=2\)
\(\Rightarrow\left(2x-7\right)^{24}+\left[-\left(2x-7\right)\right]^{24}=2\)
\(\Rightarrow\left(2x-7\right)^{24}+\left(2x-7\right)^{24}=2\)
\(\Rightarrow\left(2x-7\right)^{24}\cdot2=2\)
\(\Rightarrow\left(2x-7\right)^{24}=1\)
\(\Rightarrow\orbr{\begin{cases}2x-7=1\\2x-7=-1\end{cases}\Rightarrow\orbr{\begin{cases}2x=8\\2x=6\end{cases}\Rightarrow}\orbr{\begin{cases}x=4\\x=3\end{cases}}}\)