Answers

Add 54/10 and 70/21

1^st number: 5 4/10, 2^nd number: 3 7/21

54/10 + 70/21 is 131/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 21 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 10 × 21 = 210,
   54/10 = 54 × 21/10 × 21 = 1134/210
3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
   70/21 = 70 × 10/21 × 10 = 700/210
4. Add the two like fractions:
   1134/210 + 700/210 = 1134 + 700/210 = 1834/210
5. 1834/210 simplified gives 131/15
6. So, 54/10 + 70/21 = 131/15
   In mixed form: 811/15

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