Add 49/81 and 20/90
49/81 + 20/90 is 67/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 90 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
49/81 = 49 × 10/81 × 10 = 490/810 - Likewise, for the 2nd fraction, since 90 × 9 = 810,
20/90 = 20 × 9/90 × 9 = 180/810 - Add the two like fractions:
490/810 + 180/810 = 490 + 180/810 = 670/810 - 670/810 simplified gives 67/81
- So, 49/81 + 20/90 = 67/81
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