Answers

Add 18/63 and 98/80

1^st number: 18/63, 2^nd number: 1 18/80

18/63 + 98/80 is 423/280.

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,
   18/63 = 18 × 80/63 × 80 = 1440/5040
3. Likewise, for the 2nd fraction, since 80 × 63 = 5040,
   98/80 = 98 × 63/80 × 63 = 6174/5040
4. Add the two like fractions:
   1440/5040 + 6174/5040 = 1440 + 6174/5040 = 7614/5040
5. 7614/5040 simplified gives 423/280
6. So, 18/63 + 98/80 = 423/280
   In mixed form: 1143/280

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