Answers

Add 21/4 and 12/70

1^st number: 5 1/4, 2^nd number: 12/70

21/4 + 12/70 is 759/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 70 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 4 × 35 = 140,
   21/4 = 21 × 35/4 × 35 = 735/140
3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
   12/70 = 12 × 2/70 × 2 = 24/140
4. Add the two like fractions:
   735/140 + 24/140 = 735 + 24/140 = 759/140
5. So, 21/4 + 12/70 = 759/140
   In mixed form: 559/140

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