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Add 90/7 and 15/45

1st number: 12 6/7, 2nd number: 15/45

90/7 + 15/45 is 277/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 45 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 7 × 45 = 315,
    90/7 = 90 × 45/7 × 45 = 4050/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    15/45 = 15 × 7/45 × 7 = 105/315
  4. Add the two like fractions:
    4050/315 + 105/315 = 4050 + 105/315 = 4155/315
  5. 4155/315 simplified gives 277/21
  6. So, 90/7 + 15/45 = 277/21
    In mixed form: 134/21

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