Answers

Add 28/4 and 90/72

1^st number: 7 0/4, 2^nd number: 1 18/72

28/4 + 90/72 is 33/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 72 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 4 × 18 = 72,
   28/4 = 28 × 18/4 × 18 = 504/72
3. Likewise, for the 2nd fraction, since 72 × 1 = 72,
   90/72 = 90 × 1/72 × 1 = 90/72
4. Add the two like fractions:
   504/72 + 90/72 = 504 + 90/72 = 594/72
5. 594/72 simplified gives 33/4
6. So, 28/4 + 90/72 = 33/4
   In mixed form: 81/4

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