Question

Tìm x biết\(\frac{x+4}{5}=\frac{x-2}{2}\)

Answer 1

=> 2(x + 4) = 5(x - 2)

=> 2x + 8 = 5x - 10

=> 2x - 5x = - 10 - 8

=> - 3x = - 18

=> x = 6

Answer 2

x+4/5 = x- 2/2

Suy ra :

x + 4.2 = x - 2.5

suy ra:    2.(x+4) = 5.( x- 2)

2x+4.2 = 5x- 5.2

2x + 8 = 5x -10

8 + 10 = 5x - 2x

18 =3x

x = 18: 3

x=6

 

Answer 3

<=> 2(x+4)=5(x-2)

<=> 2x+8=5x-10

<=> 2x-5x=-10-8

<=> -3x=-18

<=> x=-18/-3

<=> x=6

Answer 4

x = 6