Answers

Add 90/72 and 60/42

1^st number: 1 18/72, 2^nd number: 1 18/42

90/72 + 60/42 is 75/28.

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,
   90/72 = 90 × 7/72 × 7 = 630/504
3. Likewise, for the 2nd fraction, since 42 × 12 = 504,
   60/42 = 60 × 12/42 × 12 = 720/504
4. Add the two like fractions:
   630/504 + 720/504 = 630 + 720/504 = 1350/504
5. 1350/504 simplified gives 75/28
6. So, 90/72 + 60/42 = 75/28
   In mixed form: 219/28

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