Answers

Add 18/42 and 90/72

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

18/42 + 90/72 is 47/28.

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,
   18/42 = 18 × 12/42 × 12 = 216/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   90/72 = 90 × 7/72 × 7 = 630/504
4. Add the two like fractions:
   216/504 + 630/504 = 216 + 630/504 = 846/504
5. 846/504 simplified gives 47/28
6. So, 18/42 + 90/72 = 47/28
   In mixed form: 119/28

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