In adding and subtracting fractions with unlike denominators, you have to get a least common denominator which is exactly like the least common multiple it just so happens to be in the denominator.

Here is the new description with all links and additional text removed: Learn how to add and subtract fractions whose denominators are not the same. Recall that when we want to add or subtract ...

Learn how to add/subtract rational expressions with monomials in the denominator. When adding or subtracting two or more rational expressions with common denominators, we add or subtract only the ...

Three, two, one…blast off! Wow, blasting off used five eighths of your fuel. If you used five eighths of your fuel to take off, and another two eighths to get this far, how much fuel have you used? To ...

Fractions are the basis for most higher-level mathematics. Students need to master the numerical values in earlier grades to tackle topics like algebra later. There’s only one hitch: Fractions can ...