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Add 81/70 and 18/16

1st number: 1 11/70, 2nd number: 1 2/16

81/70 + 18/16 is 639/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 16 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 70 × 8 = 560,
    81/70 = 81 × 8/70 × 8 = 648/560
  3. Likewise, for the 2nd fraction, since 16 × 35 = 560,
    18/16 = 18 × 35/16 × 35 = 630/560
  4. Add the two like fractions:
    648/560 + 630/560 = 648 + 630/560 = 1278/560
  5. 1278/560 simplified gives 639/280
  6. So, 81/70 + 18/16 = 639/280
    In mixed form: 279/280

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