Answers

Add 42/60 and 75/21

1^st number: 42/60, 2^nd number: 3 12/21

42/60 + 75/21 is 299/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 21 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 60 × 7 = 420,
   42/60 = 42 × 7/60 × 7 = 294/420
3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
   75/21 = 75 × 20/21 × 20 = 1500/420
4. Add the two like fractions:
   294/420 + 1500/420 = 294 + 1500/420 = 1794/420
5. 1794/420 simplified gives 299/70
6. So, 42/60 + 75/21 = 299/70
   In mixed form: 419/70

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