Помогите срочно! 1 3/4 - y= 2 7/10

1 3/4 - y = 2 7/107/4 - y = 27/10y = 7/4 - 27/10y = 35/20 - 54/20y = - (54-35)/20y = - 19/20Ответ: - 19/20

1 3/4 - у= 2 7/10-у= 27/10 - 7/4-у= 54/20 - 35/20-у= 19/20у= -19/20у= -0,95.