Add 18/49 and 36/81
18/49 + 36/81 is 358/441.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 81 is 3969
Next, find the equivalent fraction of both fractional numbers with denominator 3969 - For the 1st fraction, since 49 × 81 = 3969,
18/49 = 18 × 81/49 × 81 = 1458/3969 - Likewise, for the 2nd fraction, since 81 × 49 = 3969,
36/81 = 36 × 49/81 × 49 = 1764/3969 - Add the two like fractions:
1458/3969 + 1764/3969 = 1458 + 1764/3969 = 3222/3969 - 3222/3969 simplified gives 358/441
- So, 18/49 + 36/81 = 358/441
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/49+36/81 18/49+72/81 18/98+36/81 54/49+36/81 90/49+36/81