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Add 90/7 and 70/40

1st number: 12 6/7, 2nd number: 1 30/40

90/7 + 70/40 is 409/28.

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,
    90/7 = 90 × 40/7 × 40 = 3600/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    70/40 = 70 × 7/40 × 7 = 490/280
  4. Add the two like fractions:
    3600/280 + 490/280 = 3600 + 490/280 = 4090/280
  5. 4090/280 simplified gives 409/28
  6. So, 90/7 + 70/40 = 409/28
    In mixed form: 1417/28

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