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addition of mixed fractions

Example: 13 2/5 + 16 1/2

1. Change the mixed fractions to improper fractions

13 2/5 = [(5 * 13)+2]/5 = (65+2)/5 = 67/5

16 1/2 = [(2 * 16)+1]/2 = (32+1)/2 = 33/2

2. Find their LCD (Least Common Denominator) and then do the addition.

67/5 + 33/2

= (134 + 165)/10

= 299/10 or 29 9/10

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