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The whole idea of a variable is that any number can replace it.
Answer 1 == In an open sentence (an equation or inequality with a variable in it), when a number replacing the variable makes the sentence true, then it is a solution.
The term for replacing a variable with another value or expression is "substitution."
Substitution
evaluation, evaluate.
The whole idea of a variable is that any number can replace it.
Answer 1 == In an open sentence (an equation or inequality with a variable in it), when a number replacing the variable makes the sentence true, then it is a solution.
Yes
solution
The term for replacing a variable with another value or expression is "substitution."
evaluate.
Substitution
evaluation, evaluate.
That means that you replace something, for something else. For example, a variable for a number, or a variable for some other expression.
Evaluate
A variable must be in place of a number, or representing a range of possible values. Otherwise, it is a constant and so yous imply replace it with the value of that constant.
It's called the "solution" of the equation.