Answers

Add 10/20 and 7/4

1^st number: 10/20, 2^nd number: 1 3/4

10/20 + 7/4 is 9/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 4 is 20
   
   Next, find the equivalent fraction of both fractional numbers with denominator 20
2. For the 1st fraction, since 20 × 1 = 20,
   10/20 = 10 × 1/20 × 1 = 10/20
3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
   7/4 = 7 × 5/4 × 5 = 35/20
4. Add the two like fractions:
   10/20 + 35/20 = 10 + 35/20 = 45/20
5. 45/20 simplified gives 9/4
6. So, 10/20 + 7/4 = 9/4
   In mixed form: 21/4

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