Answers

Add 90/10 and 70/21

1^st number: 9 0/10, 2^nd number: 3 7/21

90/10 + 70/21 is 37/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 21 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 10 × 21 = 210,
   90/10 = 90 × 21/10 × 21 = 1890/210
3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
   70/21 = 70 × 10/21 × 10 = 700/210
4. Add the two like fractions:
   1890/210 + 700/210 = 1890 + 700/210 = 2590/210
5. 2590/210 simplified gives 37/3
6. So, 90/10 + 70/21 = 37/3
   In mixed form: 121/3

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