Answers

Add 21/60 and 4/45

21/60 + 4/45 is 79/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 45 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 60 × 3 = 180,
   21/60 = 21 × 3/60 × 3 = 63/180
3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
   4/45 = 4 × 4/45 × 4 = 16/180
4. Add the two like fractions:
   63/180 + 16/180 = 63 + 16/180 = 79/180
5. So, 21/60 + 4/45 = 79/180

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