Question

Tìm x biết 120+[(999-9x):60].24=480

Answer 1

120+[(999-9x):60].24=480 

[(999-9x):60].24 = 480 - 120 

[(999-9x):60].24 = 360

[(999-9x):60] = 360 : 24 

[(999-9x):60] = 15

(999-9x) = 15 x 60

(999-9x) = 900

9x = 999 - 900

9x = 99 

x = 99 : 9 

x = 11

 

Answer 2

120+[(999-9x):60]=480-120

[(999-9x):60].24=360

(999-9x):60=360:24

(999-9x):60=15

(999-9x)=15.60

999-9x=900

990x=900

x=990:900

x=?

Answer 3

120+[(999-9x):60].24=480 

[(999-9x):60].24 = 480 - 120 

[(999-9x):60].24 = 360

[(999-9x):60] = 360 : 24 

[(999-9x):60] = 15

(999-9x) = 15 x 60

(999-9x) = 900

9x = 999 - 900

9x = 99 

x = 99 : 9 

x = 11

Answer 4

120+[(999-9x):60].24=480 

[(999-9x):60].24 = 480 - 120 

[(999-9x):60].24 = 360

[(999-9x):60] = 360 : 24 

[(999-9x):60] = 15

(999-9x) = 15 x 60

(999-9x) = 900

9x = 999 - 900

9x = 99 

x = 99 : 9 

x = 11