Answers

Add 63/70 and 72/20

1^st number: 63/70, 2^nd number: 3 12/20

63/70 + 72/20 is 9/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 70 × 2 = 140,
   63/70 = 63 × 2/70 × 2 = 126/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   72/20 = 72 × 7/20 × 7 = 504/140
4. Add the two like fractions:
   126/140 + 504/140 = 126 + 504/140 = 630/140
5. 630/140 simplified gives 9/2
6. So, 63/70 + 72/20 = 9/2
   In mixed form: 41/2

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