Answers

Add 7/20 and 54/45

1^st number: 7/20, 2^nd number: 1 9/45

7/20 + 54/45 is 31/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 45 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   7/20 = 7 × 9/20 × 9 = 63/180
3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
   54/45 = 54 × 4/45 × 4 = 216/180
4. Add the two like fractions:
   63/180 + 216/180 = 63 + 216/180 = 279/180
5. 279/180 simplified gives 31/20
6. So, 7/20 + 54/45 = 31/20
   In mixed form: 111/20

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