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Add 72/35 and 70/20

1st number: 2 2/35, 2nd number: 3 10/20

72/35 + 70/20 is 389/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 20 is 140
  2. For the 1st fraction, since 35 × 4 = 140,
    72/35 = 72 × 4/35 × 4 = 288/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    70/20 = 70 × 7/20 × 7 = 490/140
  4. Add the two fractions:
    288/140 + 490/140 = 288 + 490/140 = 778/140
  5. 778/140 simplified gives 389/70
  6. So, 72/35 + 70/20 = 389/70
    In mixed form: 539/70

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