Answers

Add 90/21 and 70/25

1^st number: 4 6/21, 2^nd number: 2 20/25

90/21 + 70/25 is 248/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 25 is 525
   
   Next, find the equivalent fraction of both fractional numbers with denominator 525
2. For the 1st fraction, since 21 × 25 = 525,
   90/21 = 90 × 25/21 × 25 = 2250/525
3. Likewise, for the 2nd fraction, since 25 × 21 = 525,
   70/25 = 70 × 21/25 × 21 = 1470/525
4. Add the two like fractions:
   2250/525 + 1470/525 = 2250 + 1470/525 = 3720/525
5. 3720/525 simplified gives 248/35
6. So, 90/21 + 70/25 = 248/35
   In mixed form: 73/35

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