Is a numerical equality (like $1+2 = 3$) an algebraic equation?
In google search we have: "equation ɪˈkweɪʒ(ə)n/ noun noun: equation; plural noun: equations
1. Mathematics a statement that the values of two mathematical expressions are equal (indicated by the sign =)."
In Wikipedia we have: "In mathematics, an equation is a statement of an equality containing one or more variables."
In Merriam-webster we have: " Definition of equation for English Language Learners
mathematics : a statement that two expressions are equal (such as $8 + 3 = 11$ or $2x – 3 = 7$)