Answers

Add 1/42 and 84/72

1^st number: 1/42, 2^nd number: 1 12/72

1/42 + 84/72 is 25/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 42 × 12 = 504,
   1/42 = 1 × 12/42 × 12 = 12/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   84/72 = 84 × 7/72 × 7 = 588/504
4. Add the two like fractions:
   12/504 + 588/504 = 12 + 588/504 = 600/504
5. 600/504 simplified gives 25/21
6. So, 1/42 + 84/72 = 25/21
   In mixed form: 14/21

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