Answers

Add 84/7 and 54/90

1^st number: 12 0/7, 2^nd number: 54/90

84/7 + 54/90 is 63/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 7 × 90 = 630,
   84/7 = 84 × 90/7 × 90 = 7560/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   54/90 = 54 × 7/90 × 7 = 378/630
4. Add the two like fractions:
   7560/630 + 378/630 = 7560 + 378/630 = 7938/630
5. 7938/630 simplified gives 63/5
6. So, 84/7 + 54/90 = 63/5
   In mixed form: 123/5

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