👉 Learn how to write an algebraic expression from a verbal sentence as well as writing out a sentence from an algebraic expression. To do this, we need to know what words we use to express operations ...

In algebra, letters are used to stand for values that can change (variables) or for values that aren’t known (unknowns). A term is a combination of letters and/or numbers, often multiplied together, ...

A mathematical proof is a sequence of statements that follow on logically from each other that shows that something is always true. Using letters to stand for numbers means that we can make statements ...