Answers

Add 2/90 and 45/21

1^st number: 2/90, 2^nd number: 2 3/21

2/90 + 45/21 is 682/315.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 21 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   2/90 = 2 × 7/90 × 7 = 14/630
3. Likewise, for the 2nd fraction, since 21 × 30 = 630,
   45/21 = 45 × 30/21 × 30 = 1350/630
4. Add the two like fractions:
   14/630 + 1350/630 = 14 + 1350/630 = 1364/630
5. 1364/630 simplified gives 682/315
6. So, 2/90 + 45/21 = 682/315
   In mixed form: 252/315

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