Answers

Add 30/63 and 42/40

1^st number: 30/63, 2^nd number: 1 2/40

30/63 + 42/40 is 641/420.

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,
   30/63 = 30 × 40/63 × 40 = 1200/2520
3. Likewise, for the 2nd fraction, since 40 × 63 = 2520,
   42/40 = 42 × 63/40 × 63 = 2646/2520
4. Add the two like fractions:
   1200/2520 + 2646/2520 = 1200 + 2646/2520 = 3846/2520
5. 3846/2520 simplified gives 641/420
6. So, 30/63 + 42/40 = 641/420
   In mixed form: 1221/420

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