substitution
Substitution
When you replace a variable with a quantity, it is called a substitution.
The term for replacing a variable with another value or expression is "substitution."
Evaluating the expression.
I think it is called "replacing" or "substitution".
That is sometimes known as EVALUATING the expression.
Substituting.
X+6. Variable (x)
That is called 'solving'.
A numerical or constant quantity placed before and multiplying the variable in an algebraic expression (e.g., 4 in 4xy).
a numerical or constant quantity placed before and multiplying the variable in an algebraic expression
A numerical or constant quantity placed before and multiplying the variable in an algebraic expression