Answers

Add 18/63 and 84/40

1^st number: 18/63, 2^nd number: 2 4/40

18/63 + 84/40 is 167/70.

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,
   18/63 = 18 × 40/63 × 40 = 720/2520
3. Likewise, for the 2nd fraction, since 40 × 63 = 2520,
   84/40 = 84 × 63/40 × 63 = 5292/2520
4. Add the two like fractions:
   720/2520 + 5292/2520 = 720 + 5292/2520 = 6012/2520
5. 6012/2520 simplified gives 167/70
6. So, 18/63 + 84/40 = 167/70
   In mixed form: 227/70

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