Add 18/16 and 70/81
1st number: 1 2/16, 2nd number: 70/81
18/16 + 70/81 is 1289/648.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 81 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 16 × 81 = 1296,
18/16 = 18 × 81/16 × 81 = 1458/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
70/81 = 70 × 16/81 × 16 = 1120/1296 - Add the two like fractions:
1458/1296 + 1120/1296 = 1458 + 1120/1296 = 2578/1296 - 2578/1296 simplified gives 1289/648
- So, 18/16 + 70/81 = 1289/648
In mixed form: 1641/648
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/16+70/81 18/32+70/81 54/16+70/81 18/48+70/81 90/16+70/81 18/80+70/81