Answers

Add 90/80 and 64/40

1^st number: 1 10/80, 2^nd number: 1 24/40

90/80 + 64/40 is 109/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 40 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   90/80 = 90 × 1/80 × 1 = 90/80
3. Likewise, for the 2nd fraction, since 40 × 2 = 80,
   64/40 = 64 × 2/40 × 2 = 128/80
4. Add the two like fractions:
   90/80 + 128/80 = 90 + 128/80 = 218/80
5. 218/80 simplified gives 109/40
6. So, 90/80 + 64/40 = 109/40
   In mixed form: 229/40

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