Answers

Add 54/40 and 90/12

1^st number: 1 14/40, 2^nd number: 7 6/12

54/40 + 90/12 is 177/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 12 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 40 × 3 = 120,
   54/40 = 54 × 3/40 × 3 = 162/120
3. Likewise, for the 2nd fraction, since 12 × 10 = 120,
   90/12 = 90 × 10/12 × 10 = 900/120
4. Add the two like fractions:
   162/120 + 900/120 = 162 + 900/120 = 1062/120
5. 1062/120 simplified gives 177/20
6. So, 54/40 + 90/12 = 177/20
   In mixed form: 817/20

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