Answers

Add 2/90 and 70/21

1^st number: 2/90, 2^nd number: 3 7/21

2/90 + 70/21 is 151/45.

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,
   70/21 = 70 × 30/21 × 30 = 2100/630
4. Add the two like fractions:
   14/630 + 2100/630 = 14 + 2100/630 = 2114/630
5. 2114/630 simplified gives 151/45
6. So, 2/90 + 70/21 = 151/45
   In mixed form: 316/45

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