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Add 21/35 and 4/40

21/35 + 4/40 is 7/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 40 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 35 × 8 = 280,
    21/35 = 21 × 8/35 × 8 = 168/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    4/40 = 4 × 7/40 × 7 = 28/280
  4. Add the two like fractions:
    168/280 + 28/280 = 168 + 28/280 = 196/280
  5. 196/280 simplified gives 7/10
  6. So, 21/35 + 4/40 = 7/10

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