Answers

Add 49/63 and 4/80

49/63 + 4/80 is 149/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 80 is 5040
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5040
2. For the 1st fraction, since 63 × 80 = 5040,
   49/63 = 49 × 80/63 × 80 = 3920/5040
3. Likewise, for the 2nd fraction, since 80 × 63 = 5040,
   4/80 = 4 × 63/80 × 63 = 252/5040
4. Add the two like fractions:
   3920/5040 + 252/5040 = 3920 + 252/5040 = 4172/5040
5. 4172/5040 simplified gives 149/180
6. So, 49/63 + 4/80 = 149/180

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