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

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

=> \(15\cdot x+364=41x\)

=> \(15x+364=41x\)

=> \(364=41x-15x\)

=> \(364=26x\)

=> \(x=364:26=14\)

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

\(\Rightarrow15+\frac{364}{x}=41\)

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

x = 364 : 26 = 14

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

\(15x+364=41x\)

\(364=41x-15x\)

\(26x=364\)

\(x=364:26=14\)

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

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

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

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

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

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

\(=>x=364:26\)

\(=>x=14\)

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

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

\(\Rightarrow15.x+364=41.x\)

\(\Rightarrow364=26.x\)

\(\Rightarrow x=14\)

x=563

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

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

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

            \(15+\frac{364}{x}=41\)

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

                         \(x=364:26=14\)

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

      \(\frac{x+350}{x}+315=341\)

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

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

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

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

                                   \(x=350:25=14\)

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