Constant, perhaps scalar constant. Since you could have a constant vector or other object, as well.
Magic number
Yes, you can add or subtract a number with a variable and a number without one, but they cannot be combined into a single term. For example, you can simplify the expression (3x + 5) to show that it consists of a variable term (3x) and a constant term (5), but they remain separate. The result is (3x + 5), not a single term.
a variable
Just the number, for example: 7x the variable is 7. The variable is the number without the variable(x,y,z, etc.)
A constant.
a constant
a single variable
Constant? not positive
single variable is a that variable which works witout the interaction of other.it does not concern with any other variable
Since the variable may be real or complex, there is no single word or phrase to describe such a thing.
In algebra, a term can either be a single number, a variable or a combination of a number and a variable. For example, in 3x + 2 = 11, the terms are 3x, 2 and 11.
One term that can be expressed as a real number, a variable, or the product or quotient of a variable and a real number is "monomial." A monomial is an algebraic expression that consists of a single term, which can be a constant (real number), a variable (like (x)), or a combination of both (such as (3x) or (\frac{5}{2}y^2)).