Question

5x+8-/x-4/ =0

Answer 1

Ta có: 5x + 8 - |x - 4| = 0

=> 5x + 8 = |x - 4|

<=> 5x + 8 = x - 4

=>  5x - x = -4 - 8

=> 4x = -12

=> x = -3 

Answer 2

5x+8-|x-4|=0

suy ra: 5x+8-x-4=0

suy ra : (5x-x)+(8-4)=0

suy ra : 4x+4 = 0

suy ra:  4x = -4

suy ra: x = -1 (T/M)

Answer 3

Ta có: 5x + 8 - |x - 4| = 0
=> 5x + 8 = |x - 4|
<=> 5x + 8 = x - 4
=>  5x - x = -4 - 8
=> 4x = -12
=> x = -3