Question

Choose the best definition for the following term: substitution.

A letter that holds the place for some unknown value in mathematics.

A process where you must look for terms that have identical variable parts and then combine their coefficients.

A process where if two things are equal, one can be put in the place of the other and nothing will change.

Terms that have identical variable parts.

Answer 1

Substitution refers to when two things are equal, you can plug in one for the other, and since their values are the same, nothing changes. So, the answer would be the third one.

Answer 2

Thank you