\(697:\frac{15x+364}{x}=17\)

          \(\frac{15x+364}{x}=697:17=41\)

           \(\frac{15x}{x}+\frac{364}{x}=41\)

            \(15+\frac{364}{x}=41\)

                        \(\frac{364}{x}=41-15=26\)

                         \(x=364:26=14\)

\(92.4-27=\frac{x+350}{x}+315\)

      \(\frac{x+350}{x}+315=341\)

                   \(\frac{x+350}{x}=341-315=26\)

                \(\frac{x}{x}+\frac{350}{x}=26\)

                     \(1+\frac{350}{x}=26\)

                              \(\frac{350}{x}=26-1=25\)

                                   \(x=350:25=14\)

a) \(697:\frac{15X+364}{X}=17\)

\(\Rightarrow\frac{15X+364}{X}=697:17=41\)

\(\Rightarrow15X+364=41X\)

\(\Rightarrow364=41X-15X=26X\)

\(\Rightarrow X=14\)

THANKYOU.

A.suy ra: 15x+364/x=41

  suy ra: 15x/x+364/x=41

  suy ra: 15 + 364/x=41

  suy ra: 364/x        =26

  suy ra: 364:x=26

  suy ra: x= 14 (T/M)

B. 92.4-27=x+350/x+315

  suy ra: 341=x/x+ 350/x +315

  suy ra: 26 =1+350/x

  suy ra: 25=350/x

  suy ra: 350:25=x

  suy ra: 14=x (T/M)

Vậy a. x=14

       b. x=14

a,697:[(15.x+364):x]=17

=>(15x+364):x=679:17=41

=>\(\frac{15x}{x}+\frac{364}{x}=41\) 

=>\(15+\frac{364}{x}=41\)

=>\(\frac{364}{x}=41-15=26\)

=>\(x=\frac{364}{26}=14\)

b,92.4-27=(x+350):x+317

=>\(341=\left(x+350\right):x+317\)

=>\(\left(x+350\right):x=341-317=24\)

=>\(\frac{x}{x}+\frac{350}{x}=24\)

=>\(1+\frac{350}{x}=24\)

=>\(\frac{350}{x}=23\) => \(x=350:23=\frac{350}{23}\)

em cảm ơn ạ

a.\(697:\frac{15.a+364}{a}=17\)

\(\Leftrightarrow\frac{15.a+364}{a}=41\)

\(\Leftrightarrow15.a+364=41.a\)

\(\Leftrightarrow15.a-41.a=-364\)

\(\Leftrightarrow a.\left(15-41\right)=-364\)

\(\Leftrightarrow a.\left(-26\right)=-364\)

\(\Leftrightarrow a=14\)

b.\(92.4-27=\frac{a+350}{a}+315\)

\(\Leftrightarrow368-27=\frac{a+350}{a}+315\)

\(\Leftrightarrow\frac{a+350}{a}+315=341\)

\(\Leftrightarrow\frac{a+350}{a}=26\)

\(\Leftrightarrow a+350=a.26\)

\(\Leftrightarrow350=a.26-a\)

\(\Leftrightarrow a.\left(26-1\right)=350\)

\(\Leftrightarrow a.25=350\)

\(\Leftrightarrow a=14\)

a) x - 4867 = 2050.70. (175: 25) + 23

x - 4867 = 2050.70.7 + 23 =  1004 500 => x = 1 004 500 + 4867 =  1 009 367

b)  => (697 / 15) : x + 364 : x = 17 =>  \(\left(\frac{697}{15}+364\right):x=17\)

=> \(\frac{6157}{15}:x=17\) => x = \(\frac{6157}{15}:17=\frac{6157}{255}\)

c) => \(341=\frac{x+350}{x+315}\) => 341.(x+315) = x + 350 => 341x + 341.315 = x + 350 

=> 341x - x = 350 - 341.315 => 340x = -107 065 => x = -107 065 : 340 =....

mik chỉ biết làm phần b thôi thông cảm

đáp án phần B là 17

Good luck !

697:(15x+364):x=17

=> 15+360:x = 697:17=41

=> 360:x=41-15=26

=> x=360:26=180/13

92.4-27=(x+350):x+315

=> 1+350:x+315=341

=> 350:x = 341 -316=25

-> x=350:25=14

720:(41-(2x-51)=2³.5

=> 41-(2x-51)= 720 :40=18

=> 2x=41-18+51=74

=> x=74:2=37

(x+1)+(x+2)+(x+3)+...+(x+100)=5750

=>(x+x+...+x) +(1+2+3+..+99+100)=5750

=> 100.x +(100+1).100:2= 5750

=>100.x= 5750-5050=700

=> x=700:100=7

( L-i-k-e )

697 : (15x + 364) : x = 17

=> 15 + 360 : x = 697 : 17 = 41

=> 360 : x = 41 - 15 = 26

=> x = 360 : 26 = 180/13

92.4 - 27 = (x + 350) : x + 315

=> 1 + 350 : x + 315 = 341

=> 350 : x = 341 - 316 = 25

-> x = 350: 25 = 14

720 : (41 - (2 x - 51) = 2³.5

=> 41 - (2 x -51) = 720 : 40 = 18

=> 2x = 41 - 18 + 51 = 74

=> x = 74 : 2 = 37

(x + 1) + (x + 2) + (x + 3) +...+ (x + 100) = 5750

=>(x + x +...+ x) +(1 + 2 + 3 +...+ 99 + 100) = 5750

=> 100.x + (100 + 1).100 : 2 = 5750

=>100.x = 5750 - 5050 = 700

=> x = 700 : 100 = 7