Answers

Add 90/80 and 28/60

1^st number: 1 10/80, 2^nd number: 28/60

90/80 + 28/60 is 191/120.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 60 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 80 × 3 = 240,
   90/80 = 90 × 3/80 × 3 = 270/240
3. Likewise, for the 2nd fraction, since 60 × 4 = 240,
   28/60 = 28 × 4/60 × 4 = 112/240
4. Add the two like fractions:
   270/240 + 112/240 = 270 + 112/240 = 382/240
5. 382/240 simplified gives 191/120
6. So, 90/80 + 28/60 = 191/120
   In mixed form: 171/120

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