Answers

Add 60/40 and 30/21

1^st number: 1 20/40, 2^nd number: 1 9/21

60/40 + 30/21 is 41/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 21 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   60/40 = 60 × 21/40 × 21 = 1260/840
3. Likewise, for the 2nd fraction, since 21 × 40 = 840,
   30/21 = 30 × 40/21 × 40 = 1200/840
4. Add the two like fractions:
   1260/840 + 1200/840 = 1260 + 1200/840 = 2460/840
5. 2460/840 simplified gives 41/14
6. So, 60/40 + 30/21 = 41/14
   In mixed form: 213/14

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