Answers

Add 90/28 and 75/80

1^st number: 3 6/28, 2^nd number: 75/80

90/28 + 75/80 is 465/112.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 28 × 20 = 560,
   90/28 = 90 × 20/28 × 20 = 1800/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   75/80 = 75 × 7/80 × 7 = 525/560
4. Add the two like fractions:
   1800/560 + 525/560 = 1800 + 525/560 = 2325/560
5. 2325/560 simplified gives 465/112
6. So, 90/28 + 75/80 = 465/112
   In mixed form: 417/112

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