Add 4/81 and 7/90
4/81 + 7/90 is 103/810.
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,
4/81 = 4 × 10/81 × 10 = 40/810 - Likewise, for the 2nd fraction, since 90 × 9 = 810,
7/90 = 7 × 9/90 × 9 = 63/810 - Add the two like fractions:
40/810 + 63/810 = 40 + 63/810 = 103/810 - So, 4/81 + 7/90 = 103/810
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