d)3600/[(5x+335)/x]=50

(5x+355)/x=3600/50

5x+355=72x

72x-5x=355

67x=355

x=355/67

mình cx bí câu này

3600:[(5x+335):x]=50

(5x+335):x=3600:50

(5x+335):x=72

5x:x+335:x=72

5+335:x=72

335:x=72-5

335:x=67

\(\Rightarrow\)x=5

Vậy x=5

Đúng thì cho mình nha ^^

(5x+335):x=3600:50

(5x+335):x=72

=>5x+335=72x

=>335=72x-5x=67x

=>x=335:67=5

k cho mk nha

Trả lời:

\(3600:\left[\left(5x+335\right):x\right]=50\)

\(\Leftrightarrow\left(5x+335\right):x=\dfrac{3600}{50}\)

\(\Leftrightarrow\left(5x+335\right):x=72\)

\(\Leftrightarrow\left(5x+335\right).\dfrac{1}{x}=72\)

\(\Leftrightarrow5x.\dfrac{1}{x}+335.\dfrac{1}{x}=72\)

\(\Leftrightarrow5+\dfrac{335}{x}=72\)

\(\Leftrightarrow\dfrac{335}{x}=67\)

\(\Leftrightarrow x=\dfrac{335}{67}\)

\(\Leftrightarrow x=5\)

Vậy \(x=5\).

Chúc bạn học tốt!

trả lời:

3600:[(5x+335):x]=50

=>(5x+335):x=3600:50

(5x+335):x=72

=>5x.1:x+335.1:x=72

=>=5+335:x=72

=>335:x=67

x=335:67

x=5

3600:[(5x+335):x]=50

(5x+335):x=3600:50

(5x+335):x=72

5x+335=72x

355=72x-5x

355=67x

x=355:67

x=355/67

3600:[\(\frac{5.x+335}{x}\)] = 50

\(\frac{3600.x}{5.x+335}\)= 50

3600.x = 50.(5.x+335)

3600.x - 250.x = 16750

3350.x = 16750

=> x = 16750 : 3350 = 5

Có 3600:( (5x+335) :x )=50 (=) (5x+335) :x =3600:50=72

(=) 5x:x+335:x=72 (=) 5+335:x=72

(=)335:x =72-5=67

(=)x =335:67=5 

Vậy x=5

a)

720 : (x - 17) = 12

x – 17 = 60

x = 60 + 17

x = 77

b)

(x - 28) : 12 = 8

x – 28 = 8 . 12

x – 28 = 96

x = 124

c)

26 + 8x = 6x + 46

8x – 6x = 46 – 26

2x == 20

x = 10

d)                 

3600 : [(5x + 335) : x] = 50

(5x + 335) : x = 72

5x + 335 = 72x

67x = 335

x = 5

\(3600:\left[\left(5x+335\right):x\right]=50\)

\(\left[\left(5x+335\right):x\right]=3600:50\)

\(\left[\left(5x+335\right):x\right]=72\)

đến đây thì mik chịu ! Xin lỗi nhé !!!

3600 : [ ( 5x + 335) : x ] = 50

( 5x +335 ) : x = 3600 : 50

( 5x + 335 ) : x = 72

( 5x + 335 ) = 72x

=> 72x-5x = 335

67x = 335

=> x = 5

3600:[(5X+335):X]=50

=(5x+335):x=3600:50

=(5x+335):x=72

=5x:x+335:x+72

=5+335:x=72

=335:x=72-5

=335:x=67

  x=335:67

  x=5

3600:[(5x+335):x]=50

=>(5x+335):x=3600:50=72

=>5x+335=72.x

=>72x-5x=335

=>67x=335

=>x=5

 vậy x=5

3600 : [(5x + 335) : x] = 50

=> (5x + 335) : x = 3600 : 50

=> (5x + 335) : x = 72

=> 5x : x + 335 : x = 72

=> 5 + 335 : x = 72

=> 335 : x = 72 - 5

=> 335 : x = 67

=> x = 335 : 67

=> x = 5

nick trên làm sai mà kết quả vẫn đúng mới tai chớ hay ,quá hay (đúng là chó ngáp phải ruồi mà)