Add 12/81 and 9/10
12/81 + 9/10 is 283/270.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 10 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
12/81 = 12 × 10/81 × 10 = 120/810 - Likewise, for the 2nd fraction, since 10 × 81 = 810,
9/10 = 9 × 81/10 × 81 = 729/810 - Add the two like fractions:
120/810 + 729/810 = 120 + 729/810 = 849/810 - 849/810 simplified gives 283/270
- So, 12/81 + 9/10 = 283/270
In mixed form: 113/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/81+9/10 12/81+18/10 12/81+9/20 36/81+9/10 12/81+27/10 12/81+9/30 60/81+9/10 12/81+45/10 12/81+9/50 84/81+9/10 12/81+63/10 12/81+9/70