In algebra, letters are used when numbers are not known. Algebraic terms, such as \(2s\) or \(8y\), leave the multiplication signs out. So rather than \(2 \times s\), write \(2s\), and rather than \(8 ...

👉 Learn how to add and subtract rational expressions by applying the rules of exponents. When adding and subtracting rational expressions, we need to have common denominators. To obtain common ...

👉 Learn how to write an algebraic expression from verbal sentences 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 ...