Answers

Add 72/81 and 90/98

72/81 + 90/98 is 797/441.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 98 is 7938
   
   Next, find the equivalent fraction of both fractional numbers with denominator 7938
2. For the 1st fraction, since 81 × 98 = 7938,
   72/81 = 72 × 98/81 × 98 = 7056/7938
3. Likewise, for the 2nd fraction, since 98 × 81 = 7938,
   90/98 = 90 × 81/98 × 81 = 7290/7938
4. Add the two like fractions:
   7056/7938 + 7290/7938 = 7056 + 7290/7938 = 14346/7938
5. 14346/7938 simplified gives 797/441
6. So, 72/81 + 90/98 = 797/441
   In mixed form: 1356/441

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