Add 12/18 and 4/81
12/18 + 4/81 is 58/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 18 × 9 = 162,
12/18 = 12 × 9/18 × 9 = 108/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
4/81 = 4 × 2/81 × 2 = 8/162 - Add the two like fractions:
108/162 + 8/162 = 108 + 8/162 = 116/162 - 116/162 simplified gives 58/81
- So, 12/18 + 4/81 = 58/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18+4/81 12/18+8/81 12/36+4/81 36/18+4/81 12/18+12/81 12/54+4/81 60/18+4/81 12/18+20/81 12/90+4/81 84/18+4/81 12/18+28/81