x/2
(c+4)/2
n/2 + 4
That looks like the description of an EXPRESSION. However, an expression need not have "at least one operation"; a single number, or variable, is a perfectly valid expression.
A variable expression for the product of a number ( z ) and 4 is ( 4z ). This expression represents the multiplication of the variable ( z ) by the constant 4.
The number is called the coefficient of the variable
The variable expression for the quotient of 56 and a number can be written as ( \frac{56}{x} ), where ( x ) represents the unknown number. This expression indicates that 56 is being divided by the variable ( x ).
The number that multiplies a variable in an algebraic expression is called a coefficient. It is the numerical factor that is multiplied by the variable to form a term in the expression.
It is the coefficient of the variable
The term for replacing a variable with another value or expression is "substitution."
It is a poorly worded question. Any number in an expression can be a numerical variable.
In an algebraic expression, the number that is multiplied by a variable is called a "coefficient." For example, in the expression (3x), the number 3 is the coefficient of the variable (x). Coefficients can be positive or negative and can also be fractions or decimals.
a variable expression