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They are identical or equivalent.
A numerical expression uses numbers and operations. It also has an equal sign. An algebraic expression uses variables and operations. Unlike a numerical expression it does not have an equal sign.
Usually two algebraic expressions that are equal in values
Calculating the value of the expression when you have substituted numerical values for the variables.
A variable is a measurement that can take different "values". I put values in quotation marks because a variable can take qualitative values (for example, colour of eye) as well as quantitative (numerical) ones.
When the value of a variable in an algebraic expression changes, the value of the expression can change.
They are identical or equivalent.
A numerical expression uses numbers and operations. It also has an equal sign. An algebraic expression uses variables and operations. Unlike a numerical expression it does not have an equal sign.
Two expressions are "equivalent" if they have the same result for any values of the variable or variables.
The answer to the question is given in the question!If you want to find the value of an algebraic expression, then you need to substitute numerical values for each of the variables in the expression, and then calculate and simplify the result.
Usually two algebraic expressions that are equal in values
Calculating the value of the expression when you have substituted numerical values for the variables.
Replace the variables with the correct values and calculate using the order of operations
A variable is a measurement that can take different "values". I put values in quotation marks because a variable can take qualitative values (for example, colour of eye) as well as quantitative (numerical) ones.
There is none.
Dimensions can be more accurately calculated when using algabreic equations rather than numerical values.
Constants are numerical values which are fixed but which may or may not be known. Variables are also numerical but may take a range of values. If a variable appears in an equation or inequality), it may be possible to solve the equation to ascertain the value of the variable.