Answers

Add 18/63 and 60/80

18/63 + 60/80 is 29/28.

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,
   60/80 = 60 × 63/80 × 63 = 3780/5040
4. Add the two like fractions:
   1440/5040 + 3780/5040 = 1440 + 3780/5040 = 5220/5040
5. 5220/5040 simplified gives 29/28
6. So, 18/63 + 60/80 = 29/28
   In mixed form: 11/28

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