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Add 42/48 and 80/90

42/48 + 80/90 is 127/72.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 48 and 90 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 48 × 15 = 720,
    42/48 = 42 × 15/48 × 15 = 630/720
  3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
    80/90 = 80 × 8/90 × 8 = 640/720
  4. Add the two like fractions:
    630/720 + 640/720 = 630 + 640/720 = 1270/720
  5. 1270/720 simplified gives 127/72
  6. So, 42/48 + 80/90 = 127/72
    In mixed form: 155/72

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