Answers

Add 25/20 and 90/28

1^st number: 1 5/20, 2^nd number: 3 6/28

25/20 + 90/28 is 125/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 28 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 20 × 7 = 140,
   25/20 = 25 × 7/20 × 7 = 175/140
3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
   90/28 = 90 × 5/28 × 5 = 450/140
4. Add the two like fractions:
   175/140 + 450/140 = 175 + 450/140 = 625/140
5. 625/140 simplified gives 125/28
6. So, 25/20 + 90/28 = 125/28
   In mixed form: 413/28

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