Answers

Add 42/63 and 90/7

1^st number: 42/63, 2^nd number: 12 6/7

42/63 + 90/7 is 284/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 7 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 63 × 1 = 63,
   42/63 = 42 × 1/63 × 1 = 42/63
3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
   90/7 = 90 × 9/7 × 9 = 810/63
4. Add the two like fractions:
   42/63 + 810/63 = 42 + 810/63 = 852/63
5. 852/63 simplified gives 284/21
6. So, 42/63 + 90/7 = 284/21
   In mixed form: 1311/21

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