Answers

Add 7/90 and 21/8

1^st number: 7/90, 2^nd number: 2 5/8

7/90 + 21/8 is 973/360.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 8 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 90 × 4 = 360,
   7/90 = 7 × 4/90 × 4 = 28/360
3. Likewise, for the 2nd fraction, since 8 × 45 = 360,
   21/8 = 21 × 45/8 × 45 = 945/360
4. Add the two like fractions:
   28/360 + 945/360 = 28 + 945/360 = 973/360
5. So, 7/90 + 21/8 = 973/360
   In mixed form: 2253/360

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