Answers

Add 90/20 and 72/96

1^st number: 4 10/20, 2^nd number: 72/96

90/20 + 72/96 is 21/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 96 is 480
   
   Next, find the equivalent fraction of both fractional numbers with denominator 480
2. For the 1st fraction, since 20 × 24 = 480,
   90/20 = 90 × 24/20 × 24 = 2160/480
3. Likewise, for the 2nd fraction, since 96 × 5 = 480,
   72/96 = 72 × 5/96 × 5 = 360/480
4. Add the two like fractions:
   2160/480 + 360/480 = 2160 + 360/480 = 2520/480
5. 2520/480 simplified gives 21/4
6. So, 90/20 + 72/96 = 21/4
   In mixed form: 51/4

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