Answers

Add 25/4 and 90/72

1^st number: 6 1/4, 2^nd number: 1 18/72

25/4 + 90/72 is 15/2.

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,
   25/4 = 25 × 18/4 × 18 = 450/72
3. Likewise, for the 2nd fraction, since 72 × 1 = 72,
   90/72 = 90 × 1/72 × 1 = 90/72
4. Add the two like fractions:
   450/72 + 90/72 = 450 + 90/72 = 540/72
5. 540/72 simplified gives 15/2
6. So, 25/4 + 90/72 = 15/2
   In mixed form: 71/2

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