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Solving a rational expression by multiplying by the LCM

👉 Learn how to solve rational equations. A rational expression is an expression in the form of a fraction where the ...
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Dividing two rational expressions by multiplying by the LCM

Learn how to simplify complex fractions. To simplify complex fractions having the addition/subtraction of more than one ...
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Finding LCM and HCF from prime factors

Sometimes you are given numbers expressed as a product of prime factors. For example, 8 = 2 3 and 90 = 2 × 3 2 × 5. If you want to find the LCM and HCF in an exam, we can use prime factor form to ...