Answers

Add 84/7 and 54/40

1^st number: 12 0/7, 2^nd number: 1 14/40

84/7 + 54/40 is 267/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 40 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 7 × 40 = 280,
   84/7 = 84 × 40/7 × 40 = 3360/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   54/40 = 54 × 7/40 × 7 = 378/280
4. Add the two like fractions:
   3360/280 + 378/280 = 3360 + 378/280 = 3738/280
5. 3738/280 simplified gives 267/20
6. So, 84/7 + 54/40 = 267/20
   In mixed form: 137/20

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