Answers

Add 21/10 and 12/70

1^st number: 2 1/10, 2^nd number: 12/70

21/10 + 12/70 is 159/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 70 is 70
2. For the 1st fraction, since 10 × 7 = 70,
   21/10 = 21 × 7/10 × 7 = 147/70
3. Likewise, for the 2nd fraction, since 70 × 1 = 70,
   12/70 = 12 × 1/70 × 1 = 12/70
4. Add the two fractions:
   147/70 + 12/70 = 147 + 12/70 = 159/70
5. In mixed form: 219/70

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