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\(\frac{15.a+364}{a}\)= 697:17=41

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

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

       a=364:26

        a=14

368-27=\(\frac{a+350}{a}\)+315

314=\(\frac{a+350}{a}\)+315

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

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

a+350=26.a

26.a-a=350

(26-1).a=350

25.a=350

     a=350:25

     a=14

Trả lời:

a, x . ( 2013 + 2014 + 2015 ) = 0

=> x = 0 : ( 2013 + 2014 + 2015 )

=> x = 0

Vậy x = 0

b, x . 125 = 10000

=> x = 10000 : 125

=> x = 80

Vậy x = 80

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

=> ( 15 . x + 364 ) : x = 697 : 17

=> ( 15 . x + 364 ) : x = 41 

=> 15 . x + 364 = 41 . x

=> 41 . x - 15 . x = 364

=> ( 41 - 15 ) . x = 364

=> 26 . x = 364

=> x = 364 : 26

=> x = 14

Vậy 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

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

\(\Leftrightarrow\frac{15a+364}{a}=41\Leftrightarrow15a+364=41a\Leftrightarrow15a-41a=-364\Leftrightarrow-26a=-364\Leftrightarrow a=14\)

<=> \(\frac{15a+364}{a}=41\Leftrightarrow15a+364=41a\Leftrightarrow26a=364\Rightarrow a=14\)