Add 7/90 and 18/81
7/90 + 18/81 is 3/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 90 × 9 = 810,
7/90 = 7 × 9/90 × 9 = 63/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
18/81 = 18 × 10/81 × 10 = 180/810 - Add the two like fractions:
63/810 + 180/810 = 63 + 180/810 = 243/810 - 243/810 simplified gives 3/10
- So, 7/90 + 18/81 = 3/10
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