Answers

Add 90/63 and 28/70

1^st number: 1 27/63, 2^nd number: 28/70

90/63 + 28/70 is 64/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   90/63 = 90 × 10/63 × 10 = 900/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   28/70 = 28 × 9/70 × 9 = 252/630
4. Add the two like fractions:
   900/630 + 252/630 = 900 + 252/630 = 1152/630
5. 1152/630 simplified gives 64/35
6. So, 90/63 + 28/70 = 64/35
   In mixed form: 129/35

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