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Add 28/40 and 42/70

28/40 + 42/70 is 13/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 70 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 40 × 7 = 280,
    28/40 = 28 × 7/40 × 7 = 196/280
  3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
    42/70 = 42 × 4/70 × 4 = 168/280
  4. Add the two like fractions:
    196/280 + 168/280 = 196 + 168/280 = 364/280
  5. 364/280 simplified gives 13/10
  6. So, 28/40 + 42/70 = 13/10
    In mixed form: 13/10

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