Answers

Add 21/60 and 75/7

1^st number: 21/60, 2^nd number: 10 5/7

21/60 + 75/7 is 1549/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 7 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 60 × 7 = 420,
   21/60 = 21 × 7/60 × 7 = 147/420
3. Likewise, for the 2nd fraction, since 7 × 60 = 420,
   75/7 = 75 × 60/7 × 60 = 4500/420
4. Add the two like fractions:
   147/420 + 4500/420 = 147 + 4500/420 = 4647/420
5. 4647/420 simplified gives 1549/140
6. So, 21/60 + 75/7 = 1549/140
   In mixed form: 119/140

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