( x + 50 ) : 100 = 4,7
x + 50 = 4,7 x 100
x + 50 = 470
x = 470 - 50
x = 420
x + 50 =4,7 * 100
x + 50 =470
x =470 - 50
x=420
lam luon
(x+50) =4,7x100
x+50 =470
x =470-50
x =420
vậy x =420
( x + 50 ) : 100 = 4,7
= 4,7 x 100 - 50
= 420
( x + 50 ) : 100 = 4,7
x + 50 = 4,7 x 100
x + 50 = 470
x = 470 - 50
x = 420
Tk mik nha!!! Kamsa