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Introduction to formulas - Formulas
In algebra, a letter can be used to represent a number that you do not know. This gives us algebraic terms, like 2x and 5y.
When algebraic terms are put together by mathematical operations such as + and - we get an algebraic expression, like 2x + 5y +3z.
We can simplify algebraic expressions by collecting 'like terms'.
This Revision Bite covers:
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