Answers

Add 21/75 and 90/72

1^st number: 21/75, 2^nd number: 1 18/72

21/75 + 90/72 is 153/100.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 72 is 1800
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1800
2. For the 1st fraction, since 75 × 24 = 1800,
   21/75 = 21 × 24/75 × 24 = 504/1800
3. Likewise, for the 2nd fraction, since 72 × 25 = 1800,
   90/72 = 90 × 25/72 × 25 = 2250/1800
4. Add the two like fractions:
   504/1800 + 2250/1800 = 504 + 2250/1800 = 2754/1800
5. 2754/1800 simplified gives 153/100
6. So, 21/75 + 90/72 = 153/100
   In mixed form: 153/100

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