Fantom13372282001 3/4х - 1,5 = 1 2/3 - 0,2х 
0,75х + 0,2х = 1 2/3 + 1 1/2 
0,95х = 1 4/6 + 1 3/6 
0,95х = 2 7/6 
19/20х = 3 1/6 
19/20х = 19/6 
Х = 19/6 : 19/20 
Х = 10/3 
Х = 3 1/3