Answer
90
Work Step by Step
6 = 2 x 3
18 = 2 x 3 x 3
30 = 2 x 3 x 5
LCD = 2 x 3 x 3 x 5 = 90
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.