Answers

Add 75/72 and 90/42

1^st number: 1 3/72, 2^nd number: 2 6/42

75/72 + 90/42 is 535/168.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 42 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 72 × 7 = 504,
   75/72 = 75 × 7/72 × 7 = 525/504
3. Likewise, for the 2nd fraction, since 42 × 12 = 504,
   90/42 = 90 × 12/42 × 12 = 1080/504
4. Add the two like fractions:
   525/504 + 1080/504 = 525 + 1080/504 = 1605/504
5. 1605/504 simplified gives 535/168
6. So, 75/72 + 90/42 = 535/168
   In mixed form: 331/168

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