Answers

Add 90/35 and 30/21

1^st number: 2 20/35, 2^nd number: 1 9/21

90/35 + 30/21 is 4/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 21 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 35 × 3 = 105,
   90/35 = 90 × 3/35 × 3 = 270/105
3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
   30/21 = 30 × 5/21 × 5 = 150/105
4. Add the two like fractions:
   270/105 + 150/105 = 270 + 150/105 = 420/105
5. 420/105 simplified gives 4/1
6. So, 90/35 + 30/21 = 4/1

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