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Add 42/84 and 35/90

42/84 + 35/90 is 8/9.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 90 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 84 × 15 = 1260,
    42/84 = 42 × 15/84 × 15 = 630/1260
  3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
    35/90 = 35 × 14/90 × 14 = 490/1260
  4. Add the two like fractions:
    630/1260 + 490/1260 = 630 + 490/1260 = 1120/1260
  5. 1120/1260 simplified gives 8/9
  6. So, 42/84 + 35/90 = 8/9

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