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Add 21/7 and 28/40

1st number: 3 0/7, 2nd number: 28/40

21/7 + 28/40 is 37/10.

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,
    21/7 = 21 × 40/7 × 40 = 840/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    28/40 = 28 × 7/40 × 7 = 196/280
  4. Add the two like fractions:
    840/280 + 196/280 = 840 + 196/280 = 1036/280
  5. 1036/280 simplified gives 37/10
  6. So, 21/7 + 28/40 = 37/10
    In mixed form: 37/10

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