Add 90/81 and 63/4
1st number: 1 9/81, 2nd number: 15 3/4
90/81 + 63/4 is 607/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 4 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
90/81 = 90 × 4/81 × 4 = 360/324 - Likewise, for the 2nd fraction, since 4 × 81 = 324,
63/4 = 63 × 81/4 × 81 = 5103/324 - Add the two like fractions:
360/324 + 5103/324 = 360 + 5103/324 = 5463/324 - 5463/324 simplified gives 607/36
- So, 90/81 + 63/4 = 607/36
In mixed form: 1631/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/81+63/8 90/81+63/12 90/81+63/20 90/81+63/28