Answers

Add 90/56 and 81/90

1^st number: 1 34/56, 2^nd number: 81/90

90/56 + 81/90 is 351/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 90 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 56 × 45 = 2520,
   90/56 = 90 × 45/56 × 45 = 4050/2520
3. Likewise, for the 2nd fraction, since 90 × 28 = 2520,
   81/90 = 81 × 28/90 × 28 = 2268/2520
4. Add the two like fractions:
   4050/2520 + 2268/2520 = 4050 + 2268/2520 = 6318/2520
5. 6318/2520 simplified gives 351/140
6. So, 90/56 + 81/90 = 351/140
   In mixed form: 271/140

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