Answers

Add 21/10 and 54/42

1^st number: 2 1/10, 2^nd number: 1 12/42

21/10 + 54/42 is 237/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 42 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 10 × 21 = 210,
   21/10 = 21 × 21/10 × 21 = 441/210
3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
   54/42 = 54 × 5/42 × 5 = 270/210
4. Add the two like fractions:
   441/210 + 270/210 = 441 + 270/210 = 711/210
5. 711/210 simplified gives 237/70
6. So, 21/10 + 54/42 = 237/70
   In mixed form: 327/70

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