X -4 x 3000 = 15000
X-4 = 15000:3000
X-4= 5
X = 5+4
X = 9
[X-4]x3000=15000
X-4 =15000:3000
X-4 =5
X =5+4
X =9
NHỚ NHA CẢM ƠN
[ x - 4 ] x 3000 = 15000
[ x - 4 ] = 15000 : 3000
[ x - 4 ] = 5
x = 5 - 4
x = 1
( x - 4 ) x 3000 = 15 000
x - 4 = 15 000 : 3000
x - 4 = 5
x = 5 + 4
x = 9
( X - 4 ) x 3000 = 15000
X - 4 = 5
X = 4 + 5
X = 9
( X - 4 ) x 3 000 = 15 000
X - 4 = 15 000 : 3 000
X - 4 = 5
X = 5 + 4
X = 9