Решите пожалуйста номер 150
1) -x + (-1/3 - 2/5) = 1/15 -x + (-5/15 - 6/15) = 1/15 -x - 11/15 = 1/15 -x = 12/15 x = -4/5 2) (7/9 - 8/27) - x = 2/3 (21/27 - 8/27) - x = 18/27 13/27 - x = 18/27 -x = 5/27 x = -5/27