Answers

Add 21/40 and 14/80

21/40 + 14/80 is 7/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 40 × 2 = 80,
   21/40 = 21 × 2/40 × 2 = 42/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   14/80 = 14 × 1/80 × 1 = 14/80
4. Add the two like fractions:
   42/80 + 14/80 = 42 + 14/80 = 56/80
5. 56/80 simplified gives 7/10
6. So, 21/40 + 14/80 = 7/10

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