Answers

Add 70/20 and 63/54

1^st number: 3 10/20, 2^nd number: 1 9/54

70/20 + 63/54 is 14/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 54 is 540
   
   Next, find the equivalent fraction of both fractional numbers with denominator 540
2. For the 1st fraction, since 20 × 27 = 540,
   70/20 = 70 × 27/20 × 27 = 1890/540
3. Likewise, for the 2nd fraction, since 54 × 10 = 540,
   63/54 = 63 × 10/54 × 10 = 630/540
4. Add the two like fractions:
   1890/540 + 630/540 = 1890 + 630/540 = 2520/540
5. 2520/540 simplified gives 14/3
6. So, 70/20 + 63/54 = 14/3
   In mixed form: 42/3

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