Answers

Add 84/54 and 15/40

1^st number: 1 30/54, 2^nd number: 15/40

84/54 + 15/40 is 139/72.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 40 is 1080
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1080
2. For the 1st fraction, since 54 × 20 = 1080,
   84/54 = 84 × 20/54 × 20 = 1680/1080
3. Likewise, for the 2nd fraction, since 40 × 27 = 1080,
   15/40 = 15 × 27/40 × 27 = 405/1080
4. Add the two like fractions:
   1680/1080 + 405/1080 = 1680 + 405/1080 = 2085/1080
5. 2085/1080 simplified gives 139/72
6. So, 84/54 + 15/40 = 139/72
   In mixed form: 167/72

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