Answers

Add 12/63 and 81/40

1^st number: 12/63, 2^nd number: 2 1/40

12/63 + 81/40 is 1861/840.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 40 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 63 × 40 = 2520,
   12/63 = 12 × 40/63 × 40 = 480/2520
3. Likewise, for the 2nd fraction, since 40 × 63 = 2520,
   81/40 = 81 × 63/40 × 63 = 5103/2520
4. Add the two like fractions:
   480/2520 + 5103/2520 = 480 + 5103/2520 = 5583/2520
5. 5583/2520 simplified gives 1861/840
6. So, 12/63 + 81/40 = 1861/840
   In mixed form: 2181/840

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