Answers

Add 80/56 and 9/90

1^st number: 1 24/56, 2^nd number: 9/90

80/56 + 9/90 is 107/70.

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,
   80/56 = 80 × 45/56 × 45 = 3600/2520
3. Likewise, for the 2nd fraction, since 90 × 28 = 2520,
   9/90 = 9 × 28/90 × 28 = 252/2520
4. Add the two like fractions:
   3600/2520 + 252/2520 = 3600 + 252/2520 = 3852/2520
5. 3852/2520 simplified gives 107/70
6. So, 80/56 + 9/90 = 107/70
   In mixed form: 137/70

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