Answers

Add 63/70 and 42/20

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

63/70 + 42/20 is 3/1.

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,
   42/20 = 42 × 7/20 × 7 = 294/140
4. Add the two like fractions:
   126/140 + 294/140 = 126 + 294/140 = 420/140
5. 420/140 simplified gives 3/1
6. So, 63/70 + 42/20 = 3/1

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