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Add 10/84 and 8/40

10/84 + 8/40 is 67/210.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 40 is 840
  2. For the 1st fraction, since 84 × 10 = 840,
    10/84 = 10 × 10/84 × 10 = 100/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    8/40 = 8 × 21/40 × 21 = 168/840
  4. Add the two fractions:
    100/840 + 168/840 = 100 + 168/840 = 268/840
  5. 268/840 simplified gives 67/210
  6. So, 10/84 + 8/40 = 67/210

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