Answers

Add 4/50 and 21/80

4/50 + 21/80 is 137/400.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 80 is 400
   
   Next, find the equivalent fraction of both fractional numbers with denominator 400
2. For the 1st fraction, since 50 × 8 = 400,
   4/50 = 4 × 8/50 × 8 = 32/400
3. Likewise, for the 2nd fraction, since 80 × 5 = 400,
   21/80 = 21 × 5/80 × 5 = 105/400
4. Add the two like fractions:
   32/400 + 105/400 = 32 + 105/400 = 137/400
5. So, 4/50 + 21/80 = 137/400

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