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Add 20/90 and 7/8

20/90 + 7/8 is 79/72.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 8 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 90 × 4 = 360,
    20/90 = 20 × 4/90 × 4 = 80/360
  3. Likewise, for the 2nd fraction, since 8 × 45 = 360,
    7/8 = 7 × 45/8 × 45 = 315/360
  4. Add the two like fractions:
    80/360 + 315/360 = 80 + 315/360 = 395/360
  5. 395/360 simplified gives 79/72
  6. So, 20/90 + 7/8 = 79/72
    In mixed form: 17/72

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