Answers

Add 84/7 and 45/54

1^st number: 12 0/7, 2^nd number: 45/54

84/7 + 45/54 is 77/6.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 7 × 54 = 378,
   84/7 = 84 × 54/7 × 54 = 4536/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   45/54 = 45 × 7/54 × 7 = 315/378
4. Add the two like fractions:
   4536/378 + 315/378 = 4536 + 315/378 = 4851/378
5. 4851/378 simplified gives 77/6
6. So, 84/7 + 45/54 = 77/6
   In mixed form: 125/6

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