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Add 98/70 and 90/72

1st number: 1 28/70, 2nd number: 1 18/72

98/70 + 90/72 is 53/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 72 is 2520

    Next, find the equivalent fraction of both fractional numbers with denominator 2520
  2. For the 1st fraction, since 70 × 36 = 2520,
    98/70 = 98 × 36/70 × 36 = 3528/2520
  3. Likewise, for the 2nd fraction, since 72 × 35 = 2520,
    90/72 = 90 × 35/72 × 35 = 3150/2520
  4. Add the two like fractions:
    3528/2520 + 3150/2520 = 3528 + 3150/2520 = 6678/2520
  5. 6678/2520 simplified gives 53/20
  6. So, 98/70 + 90/72 = 53/20
    In mixed form: 213/20

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