Answers

Add 16/42 and 90/72

1^st number: 16/42, 2^nd number: 1 18/72

16/42 + 90/72 is 137/84.

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,
   16/42 = 16 × 12/42 × 12 = 192/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   90/72 = 90 × 7/72 × 7 = 630/504
4. Add the two like fractions:
   192/504 + 630/504 = 192 + 630/504 = 822/504
5. 822/504 simplified gives 137/84
6. So, 16/42 + 90/72 = 137/84
   In mixed form: 153/84

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