Answers

Add 70/63 and 16/90

1^st number: 1 7/63, 2^nd number: 16/90

70/63 + 16/90 is 58/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   70/63 = 70 × 10/63 × 10 = 700/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   16/90 = 16 × 7/90 × 7 = 112/630
4. Add the two like fractions:
   700/630 + 112/630 = 700 + 112/630 = 812/630
5. 812/630 simplified gives 58/45
6. So, 70/63 + 16/90 = 58/45
   In mixed form: 113/45

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