Add 3/10 and 7/81
3/10 + 7/81 is 313/810.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 10 × 81 = 810,
3/10 = 3 × 81/10 × 81 = 243/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
7/81 = 7 × 10/81 × 10 = 70/810 - Add the two like fractions:
243/810 + 70/810 = 243 + 70/810 = 313/810 - So, 3/10 + 7/81 = 313/810
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