Question

x+0.1+x+0.2+x..........+x+0.5=5.55

 

Answer 1

X+ 0,1+X+0,2+...+X+0,5=5,55

<=> 5x X + (0,5+0,1) x 5 :2 = 5,55

<=> 5 x X + 1,5 = 5,55

<=> 5 x X= 5,55- 1,5

<=> 5 x X= 4,05

<=>X= 4,05:5

<=>X=0,81

Answer 2

mik cần gấp ạ

 

Answer 3

Ta có: x+0,1+x+0,2+x+...+x+0,5=5,55

nên 5x+1,5=5,55

\(\Leftrightarrow5x=4,05\)

hay x=0,81

Vậy: x=0,81

Answer 4

x+0.1+x+0.2+x..........+x+0.5=55.5

Answer 5

mik nhầm đề bài nhé

Answer 6

X+ 0,1+X+0,2+...+X+0,5=5,55

<=> 5x X + (0,5+0,1) x 5 :2 = 5,55

<=> 5 x X + 1,5 = 5,55

<=> 5 x X= 5,55- 1,5

<=> 5 x X= 4,05

<=>X= 4,05:5

<=>X=0,81

Answer 7

X+ 0,1+X+0,2+...+X+0,5=5,55 

 5x X + (0,5+0,1) x 5 :2 = 5,55

 5 x X + 1,5 = 5,55

 5 x X= 5,55- 1,5

5 x X= 4,05

X= 4,05:5

X=0,81