What is the lowest common denominator of 3/(x^3y) and 7/(xy^4)?

1 Answer
Feb 3, 2018

x^3y^4

Explanation:

To find the lowest common denominator, you have to find the least common multiple of both denominators. 3/(x^3y) has the denominator x^3y, and 7/(xy^4) has xy^4. First, think of x. you need to have x^3 as the x part because x goes into it x^2 times, and x^3 goes into it once. Do this again for the y part: you need y^4 because y^4 goes in once and y goes in y^3 times. Now combine your x and y parts. You end up with x^3y^4.