( 4,5 - 2x ) . 1 4/7 = 11/14
( 4,5 - 2x ) . 11/7 = 11/14
4,5 - 2x = 11/14 : 11/7
4,5 - 2x = 1/2
2x = 4,5 - 1/2
2x =4
x = 4 : 2
x = 2
(4.5-2x) x 1 4/7=11/14
4.5-2x =11/14:1 4/7
45/10-2x =11/14:11/7
9/2-2x =11/14 x 3/11
9/2-2x =1/2
2x =9/2-1/2
2x =4
x =4:2
x 2
Vậy x=2