where l_con is given in one of the following formats:
linear_term operator number
number operator linear_term
and linear_term is of the following form:
The value of operator can be one of the following: or =.
The LINCON statement specifies equality or inequality constraints
separated by commas. For example, the constraint is expressed as
decvar x1 x2; lincon 4 * x1 - 3 * x2 = 0;
and the constraints
are expressed as
decvar x1 x2; lincon 10 <= 10 * x1 - x2, x1 + 5 * x2 >= 15;