how to add fractins with diffrent denominators

eg, 10/20 +21/60
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1 Answer

10 / 20 + 21 / 60

Find the LCD

It is 60. 

(10 * 3 + 21) / 60 =

(30 + 21) / 60 =

51 / 60

by Level 10 User (55.7k points)

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