Answers

Add 21/80 and 7/54

21/80 + 7/54 is 847/2160.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 54 is 2160
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2160
2. For the 1st fraction, since 80 × 27 = 2160,
   21/80 = 21 × 27/80 × 27 = 567/2160
3. Likewise, for the 2nd fraction, since 54 × 40 = 2160,
   7/54 = 7 × 40/54 × 40 = 280/2160
4. Add the two like fractions:
   567/2160 + 280/2160 = 567 + 280/2160 = 847/2160
5. So, 21/80 + 7/54 = 847/2160

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