Answers

Add 70/20 and 63/28

1^st number: 3 10/20, 2^nd number: 2 7/28

70/20 + 63/28 is 23/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 28 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 20 × 7 = 140,
   70/20 = 70 × 7/20 × 7 = 490/140
3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
   63/28 = 63 × 5/28 × 5 = 315/140
4. Add the two like fractions:
   490/140 + 315/140 = 490 + 315/140 = 805/140
5. 805/140 simplified gives 23/4
6. So, 70/20 + 63/28 = 23/4
   In mixed form: 53/4

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