Answers

Add 90/21 and 35/70

1^st number: 4 6/21, 2^nd number: 35/70

90/21 + 35/70 is 67/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 70 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 21 × 10 = 210,
   90/21 = 90 × 10/21 × 10 = 900/210
3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
   35/70 = 35 × 3/70 × 3 = 105/210
4. Add the two like fractions:
   900/210 + 105/210 = 900 + 105/210 = 1005/210
5. 1005/210 simplified gives 67/14
6. So, 90/21 + 35/70 = 67/14
   In mixed form: 411/14

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