х - 1 1/3 + 2,8 - х - 1,3 = -4/3 + 1,5 = -4/3 + 3/2 = -8/6 + 9/6 = 1/6
х- 11/3+ 14/5-x-13/10=110/30+ 84/30-39/30=155/30=5, 1/6
х - 1 1/3 + 2,8 - х - 1,3 = -4/3 + 1,5 = -4/3 + 3/2 = -8/6 + 9/6 = 1/6
х- 11/3+ 14/5-x-13/10=110/30+ 84/30-39/30=155/30=5, 1/6