Answers

Add 42/25 and 75/21

1^st number: 1 17/25, 2^nd number: 3 12/21

42/25 + 75/21 is 919/175.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 21 is 525
   
   Next, find the equivalent fraction of both fractional numbers with denominator 525
2. For the 1st fraction, since 25 × 21 = 525,
   42/25 = 42 × 21/25 × 21 = 882/525
3. Likewise, for the 2nd fraction, since 21 × 25 = 525,
   75/21 = 75 × 25/21 × 25 = 1875/525
4. Add the two like fractions:
   882/525 + 1875/525 = 882 + 1875/525 = 2757/525
5. 2757/525 simplified gives 919/175
6. So, 42/25 + 75/21 = 919/175
   In mixed form: 544/175

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