Add 6/81 and 12/20
6/81 + 12/20 is 91/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 20 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
6/81 = 6 × 20/81 × 20 = 120/1620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,
12/20 = 12 × 81/20 × 81 = 972/1620 - Add the two like fractions:
120/1620 + 972/1620 = 120 + 972/1620 = 1092/1620 - 1092/1620 simplified gives 91/135
- So, 6/81 + 12/20 = 91/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/81+12/20 6/81+24/20 6/81+12/40 18/81+12/20 6/81+36/20 6/81+12/60 30/81+12/20 6/81+60/20 42/81+12/20 6/81+84/20