In algebra, letters are used to stand for values that can change (variables) or for values that aren’t known (unknowns), for example: ...

One or more characters or symbols associated with algebra; for example, A+B=C or A/B. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

Learn and revise the multiplication and rearrangement of formulas with BBC Bitesize KS3 Maths. WATCH: How to collect like terms in algebra See how to collect like terms in algebra, using apples to ...

👉 Learn how to evaluate logarithm expressions. Recall that the logarithm of a number, say a, to the base of another number, say b, is a number, say n, which when raised as a power of b gives a. (i.e.